./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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-lit/LeeJonesBen-Amram-POPL2001-Ex5.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 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:58:46,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:58:46,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:58:46,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:58:46,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:58:46,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:58:46,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:58:46,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:58:46,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:58:46,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:58:46,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:58:46,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:58:46,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:58:46,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:58:46,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:58:46,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:58:46,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:58:46,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:58:46,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:58:46,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:58:46,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:58:46,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:58:46,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:58:46,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:58:46,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:58:46,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:58:46,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:58:46,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:58:46,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:58:46,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:58:46,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:58:46,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:58:46,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:58:46,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:58:46,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:58:46,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:58:46,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:58:46,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:58:46,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:58:46,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:58:46,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:58:46,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 03:58:46,567 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:58:46,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:58:46,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:58:46,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:58:46,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:58:46,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:58:46,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:58:46,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:58:46,570 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:58:46,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:58:46,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 03:58:46,571 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 03:58:46,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 03:58:46,572 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:58:46,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 03:58:46,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:58:46,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:58:46,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:58:46,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:58:46,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:58:46,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:58:46,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 03:58:46,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:58:46,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:58:46,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:58:46,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 03:58:46,574 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:58:46,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:58:46,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:58:46,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2023-02-17 03:58:46,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:58:46,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:58:46,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:58:46,782 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:58:46,783 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:58:46,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-17 03:58:47,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:58:47,921 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:58:47,922 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-17 03:58:47,926 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc3e63cd/1806c9dcf20b43cdb07fb9150f5257ef/FLAGe9e3b52cf [2023-02-17 03:58:47,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cc3e63cd/1806c9dcf20b43cdb07fb9150f5257ef [2023-02-17 03:58:47,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:58:47,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:58:47,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:58:47,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:58:47,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:58:47,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:58:47" (1/1) ... [2023-02-17 03:58:47,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e46a370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:47, skipping insertion in model container [2023-02-17 03:58:47,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:58:47" (1/1) ... [2023-02-17 03:58:47,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:58:47,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:58:48,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:58:48,062 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:58:48,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:58:48,081 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:58:48,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48 WrapperNode [2023-02-17 03:58:48,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:58:48,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:58:48,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:58:48,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:58:48,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,100 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-02-17 03:58:48,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:58:48,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:58:48,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:58:48,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:58:48,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:58:48,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:58:48,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:58:48,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:58:48,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (1/1) ... [2023-02-17 03:58:48,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:58:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:48,140 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) [2023-02-17 03:58:48,145 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 [2023-02-17 03:58:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-17 03:58:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-17 03:58:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:58:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:58:48,217 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:58:48,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:58:48,337 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:58:48,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:58:48,348 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 03:58:48,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:58:48 BoogieIcfgContainer [2023-02-17 03:58:48,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:58:48,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:58:48,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:58:48,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:58:48,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:58:47" (1/3) ... [2023-02-17 03:58:48,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26da930e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:58:48, skipping insertion in model container [2023-02-17 03:58:48,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:58:48" (2/3) ... [2023-02-17 03:58:48,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26da930e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:58:48, skipping insertion in model container [2023-02-17 03:58:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:58:48" (3/3) ... [2023-02-17 03:58:48,357 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2023-02-17 03:58:48,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:58:48,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 03:58:48,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:58:48,427 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;@6416ba80, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:58:48,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 03:58:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:58:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 03:58:48,435 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:48,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:48,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2023-02-17 03:58:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:48,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279901135] [2023-02-17 03:58:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279901135] [2023-02-17 03:58:48,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279901135] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:48,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:58:48,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:58:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739493074] [2023-02-17 03:58:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:48,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:48,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:58:48,641 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:48,744 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-02-17 03:58:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:58:48,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 03:58:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:48,751 INFO L225 Difference]: With dead ends: 49 [2023-02-17 03:58:48,751 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 03:58:48,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:58:48,757 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:48,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 84 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 03:58:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-02-17 03:58:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-02-17 03:58:48,779 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2023-02-17 03:58:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:48,779 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-02-17 03:58:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-02-17 03:58:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 03:58:48,780 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:48,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:58:48,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2023-02-17 03:58:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175862054] [2023-02-17 03:58:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:48,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:48,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175862054] [2023-02-17 03:58:48,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175862054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:48,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:58:48,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:58:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293454220] [2023-02-17 03:58:48,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:48,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:48,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:58:48,841 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:48,875 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-02-17 03:58:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:58:48,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 03:58:48,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:48,877 INFO L225 Difference]: With dead ends: 29 [2023-02-17 03:58:48,877 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 03:58:48,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:58:48,878 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:48,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 37 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 03:58:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-02-17 03:58:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-17 03:58:48,882 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2023-02-17 03:58:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:48,882 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-17 03:58:48,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-17 03:58:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 03:58:48,883 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:48,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:58:48,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2023-02-17 03:58:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:48,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120579619] [2023-02-17 03:58:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:48,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120579619] [2023-02-17 03:58:48,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120579619] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:48,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:58:48,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:58:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609465296] [2023-02-17 03:58:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:48,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:58:48,922 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:48,950 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-17 03:58:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:58:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 03:58:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:48,952 INFO L225 Difference]: With dead ends: 35 [2023-02-17 03:58:48,952 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 03:58:48,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:58:48,953 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:48,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 03:58:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2023-02-17 03:58:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-17 03:58:48,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2023-02-17 03:58:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:48,958 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-17 03:58:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-17 03:58:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 03:58:48,959 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:48,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:58:48,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2023-02-17 03:58:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072184966] [2023-02-17 03:58:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:48,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072184966] [2023-02-17 03:58:48,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072184966] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:48,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:58:48,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:58:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140813328] [2023-02-17 03:58:48,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:48,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:48,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:48,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:58:48,994 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:49,017 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-17 03:58:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:58:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 03:58:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:49,019 INFO L225 Difference]: With dead ends: 33 [2023-02-17 03:58:49,019 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 03:58:49,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:58:49,020 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:49,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 03:58:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-02-17 03:58:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-02-17 03:58:49,025 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2023-02-17 03:58:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:49,026 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-02-17 03:58:49,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-02-17 03:58:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:58:49,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:49,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:58:49,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2023-02-17 03:58:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934546134] [2023-02-17 03:58:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:49,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934546134] [2023-02-17 03:58:49,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934546134] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179502568] [2023-02-17 03:58:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:49,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:49,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:49,116 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) [2023-02-17 03:58:49,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:58:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:49,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:58:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:49,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:49,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179502568] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:49,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:49,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 03:58:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074732334] [2023-02-17 03:58:49,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:49,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:58:49,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:58:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:58:49,240 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:49,347 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-02-17 03:58:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 03:58:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 03:58:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:49,350 INFO L225 Difference]: With dead ends: 66 [2023-02-17 03:58:49,352 INFO L226 Difference]: Without dead ends: 65 [2023-02-17 03:58:49,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:58:49,358 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 80 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:49,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-17 03:58:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2023-02-17 03:58:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-02-17 03:58:49,369 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2023-02-17 03:58:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:49,370 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-02-17 03:58:49,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-02-17 03:58:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:58:49,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:49,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:49,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 03:58:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:49,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2023-02-17 03:58:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:49,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441005703] [2023-02-17 03:58:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:49,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:49,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441005703] [2023-02-17 03:58:49,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441005703] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:49,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112012070] [2023-02-17 03:58:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:49,648 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) [2023-02-17 03:58:49,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 03:58:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:49,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 03:58:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:49,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:58:49,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112012070] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:49,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 03:58:49,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-17 03:58:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127198623] [2023-02-17 03:58:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:58:49,704 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:49,761 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-17 03:58:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:58:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 03:58:49,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:49,762 INFO L225 Difference]: With dead ends: 60 [2023-02-17 03:58:49,763 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 03:58:49,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:58:49,764 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:49,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 03:58:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-17 03:58:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-17 03:58:49,770 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2023-02-17 03:58:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:49,770 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-17 03:58:49,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:49,770 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-17 03:58:49,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:58:49,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:49,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:49,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:49,971 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,SelfDestructingSolverStorable5 [2023-02-17 03:58:49,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2023-02-17 03:58:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:49,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692186074] [2023-02-17 03:58:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:50,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692186074] [2023-02-17 03:58:50,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692186074] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:50,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099943273] [2023-02-17 03:58:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:50,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:50,027 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) [2023-02-17 03:58:50,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 03:58:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:50,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:58:50,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099943273] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:50,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:50,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 03:58:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163608632] [2023-02-17 03:58:50,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:50,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:58:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:50,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:58:50,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:58:50,109 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:50,279 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2023-02-17 03:58:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-17 03:58:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 03:58:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:50,281 INFO L225 Difference]: With dead ends: 101 [2023-02-17 03:58:50,281 INFO L226 Difference]: Without dead ends: 99 [2023-02-17 03:58:50,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2023-02-17 03:58:50,282 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:50,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 92 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-17 03:58:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2023-02-17 03:58:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 62 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2023-02-17 03:58:50,291 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2023-02-17 03:58:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:50,291 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2023-02-17 03:58:50,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2023-02-17 03:58:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 03:58:50,292 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:50,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:50,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:50,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2023-02-17 03:58:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:50,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427051655] [2023-02-17 03:58:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:50,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427051655] [2023-02-17 03:58:50,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427051655] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:50,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972662833] [2023-02-17 03:58:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:50,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:50,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:50,549 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) [2023-02-17 03:58:50,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 03:58:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:50,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:58:50,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:50,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972662833] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:50,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:50,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 03:58:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181067122] [2023-02-17 03:58:50,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:50,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:58:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:58:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:58:50,631 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:50,839 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-02-17 03:58:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-17 03:58:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 03:58:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:50,840 INFO L225 Difference]: With dead ends: 117 [2023-02-17 03:58:50,840 INFO L226 Difference]: Without dead ends: 115 [2023-02-17 03:58:50,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 03:58:50,841 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 180 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:50,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 48 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-17 03:58:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2023-02-17 03:58:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-02-17 03:58:50,848 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2023-02-17 03:58:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:50,848 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-02-17 03:58:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-02-17 03:58:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 03:58:50,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:50,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:50,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,054 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2023-02-17 03:58:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:51,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970804107] [2023-02-17 03:58:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:51,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970804107] [2023-02-17 03:58:51,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970804107] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115001506] [2023-02-17 03:58:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:51,096 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) [2023-02-17 03:58:51,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 03:58:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 03:58:51,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:58:51,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115001506] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:58:51,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 03:58:51,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-02-17 03:58:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481796002] [2023-02-17 03:58:51,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:58:51,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:58:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:58:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-17 03:58:51,135 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:51,169 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2023-02-17 03:58:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:58:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 03:58:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:51,170 INFO L225 Difference]: With dead ends: 102 [2023-02-17 03:58:51,170 INFO L226 Difference]: Without dead ends: 101 [2023-02-17 03:58:51,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:58:51,171 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:51,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-17 03:58:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2023-02-17 03:58:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 79 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2023-02-17 03:58:51,177 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2023-02-17 03:58:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:51,177 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2023-02-17 03:58:51,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2023-02-17 03:58:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 03:58:51,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:51,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:51,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:51,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2023-02-17 03:58:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:51,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767842407] [2023-02-17 03:58:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767842407] [2023-02-17 03:58:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767842407] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568997290] [2023-02-17 03:58:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:51,421 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) [2023-02-17 03:58:51,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 03:58:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:58:51,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568997290] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:51,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:51,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 03:58:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917947958] [2023-02-17 03:58:51,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:51,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:58:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:58:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:58:51,497 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:51,684 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2023-02-17 03:58:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 03:58:51,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 03:58:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:51,685 INFO L225 Difference]: With dead ends: 139 [2023-02-17 03:58:51,685 INFO L226 Difference]: Without dead ends: 137 [2023-02-17 03:58:51,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2023-02-17 03:58:51,686 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:51,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 57 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-17 03:58:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 113. [2023-02-17 03:58:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 95 states have internal predecessors, (120), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2023-02-17 03:58:51,692 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 15 [2023-02-17 03:58:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:51,692 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2023-02-17 03:58:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2023-02-17 03:58:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 03:58:51,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:51,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:51,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:51,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2023-02-17 03:58:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:51,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713854246] [2023-02-17 03:58:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713854246] [2023-02-17 03:58:51,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713854246] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533494562] [2023-02-17 03:58:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:51,932 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) [2023-02-17 03:58:51,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 03:58:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:51,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:58:51,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:51,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533494562] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:51,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:51,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 03:58:51,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517421302] [2023-02-17 03:58:51,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:51,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 03:58:51,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:51,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 03:58:51,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-02-17 03:58:51,982 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:52,037 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2023-02-17 03:58:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:58:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 03:58:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:52,038 INFO L225 Difference]: With dead ends: 113 [2023-02-17 03:58:52,038 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 03:58:52,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-02-17 03:58:52,039 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:52,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:58:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 03:58:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2023-02-17 03:58:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-02-17 03:58:52,044 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2023-02-17 03:58:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:52,044 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-02-17 03:58:52,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-02-17 03:58:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:58:52,048 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:52,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:52,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:52,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:52,257 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2023-02-17 03:58:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:52,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954512738] [2023-02-17 03:58:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954512738] [2023-02-17 03:58:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954512738] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873171029] [2023-02-17 03:58:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:52,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:52,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:52,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 03:58:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:52,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:58:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:52,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:52,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873171029] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:52,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:52,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2023-02-17 03:58:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758703160] [2023-02-17 03:58:52,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 03:58:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 03:58:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-02-17 03:58:52,507 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:52,897 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2023-02-17 03:58:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-17 03:58:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-17 03:58:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:52,898 INFO L225 Difference]: With dead ends: 151 [2023-02-17 03:58:52,898 INFO L226 Difference]: Without dead ends: 149 [2023-02-17 03:58:52,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=553, Invalid=2203, Unknown=0, NotChecked=0, Total=2756 [2023-02-17 03:58:52,899 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 249 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:52,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 102 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:58:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-17 03:58:52,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2023-02-17 03:58:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2023-02-17 03:58:52,907 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 26 [2023-02-17 03:58:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:52,908 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2023-02-17 03:58:52,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2023-02-17 03:58:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:58:52,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:52,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:52,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-17 03:58:53,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-17 03:58:53,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 1 times [2023-02-17 03:58:53,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:53,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994170619] [2023-02-17 03:58:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994170619] [2023-02-17 03:58:53,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994170619] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:53,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226882518] [2023-02-17 03:58:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:53,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:53,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:53,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 03:58:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:53,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:58:53,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:53,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:53,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226882518] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:53,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:53,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-02-17 03:58:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52099991] [2023-02-17 03:58:53,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:53,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 03:58:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 03:58:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-02-17 03:58:53,314 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:53,577 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2023-02-17 03:58:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-17 03:58:53,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-17 03:58:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:53,578 INFO L225 Difference]: With dead ends: 195 [2023-02-17 03:58:53,579 INFO L226 Difference]: Without dead ends: 193 [2023-02-17 03:58:53,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=437, Invalid=1725, Unknown=0, NotChecked=0, Total=2162 [2023-02-17 03:58:53,580 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 143 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:53,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 78 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-02-17 03:58:53,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 119. [2023-02-17 03:58:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2023-02-17 03:58:53,588 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 26 [2023-02-17 03:58:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:53,588 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2023-02-17 03:58:53,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2023-02-17 03:58:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 03:58:53,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:53,589 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 03:58:53,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-17 03:58:53,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1894821127, now seen corresponding path program 2 times [2023-02-17 03:58:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678379202] [2023-02-17 03:58:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678379202] [2023-02-17 03:58:53,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678379202] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189356811] [2023-02-17 03:58:53,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:58:53,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:53,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:53,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:53,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 03:58:53,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:58:53,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:58:53,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 03:58:53,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:54,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189356811] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:54,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:54,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 29 [2023-02-17 03:58:54,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969599063] [2023-02-17 03:58:54,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-17 03:58:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-17 03:58:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-02-17 03:58:54,156 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:54,821 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2023-02-17 03:58:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-17 03:58:54,821 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-17 03:58:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:54,822 INFO L225 Difference]: With dead ends: 263 [2023-02-17 03:58:54,822 INFO L226 Difference]: Without dead ends: 261 [2023-02-17 03:58:54,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1389, Invalid=5921, Unknown=0, NotChecked=0, Total=7310 [2023-02-17 03:58:54,824 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 366 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:54,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 131 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:58:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-02-17 03:58:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2023-02-17 03:58:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2023-02-17 03:58:54,833 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2023-02-17 03:58:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2023-02-17 03:58:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2023-02-17 03:58:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 03:58:54,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:54,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 03:58:54,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-17 03:58:55,040 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 28164967, now seen corresponding path program 2 times [2023-02-17 03:58:55,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:55,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27190191] [2023-02-17 03:58:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:55,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:58:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27190191] [2023-02-17 03:58:55,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27190191] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30577300] [2023-02-17 03:58:55,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:58:55,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:55,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:55,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:55,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 03:58:55,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:58:55,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:58:55,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 03:58:55,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:55,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:55,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30577300] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:55,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:55,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 32 [2023-02-17 03:58:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878101849] [2023-02-17 03:58:55,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 03:58:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 03:58:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 03:58:55,383 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 33 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 19 states have internal predecessors, (82), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:56,532 INFO L93 Difference]: Finished difference Result 779 states and 911 transitions. [2023-02-17 03:58:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-17 03:58:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 19 states have internal predecessors, (82), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-17 03:58:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:56,534 INFO L225 Difference]: With dead ends: 779 [2023-02-17 03:58:56,535 INFO L226 Difference]: Without dead ends: 777 [2023-02-17 03:58:56,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1863, Invalid=9909, Unknown=0, NotChecked=0, Total=11772 [2023-02-17 03:58:56,537 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 644 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:56,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 131 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 03:58:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-02-17 03:58:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 306. [2023-02-17 03:58:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 254 states have (on average 1.2165354330708662) internal successors, (309), 255 states have internal predecessors, (309), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 359 transitions. [2023-02-17 03:58:56,559 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 359 transitions. Word has length 38 [2023-02-17 03:58:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:56,559 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 359 transitions. [2023-02-17 03:58:56,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 19 states have internal predecessors, (82), 15 states have call successors, (17), 15 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 359 transitions. [2023-02-17 03:58:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 03:58:56,561 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:56,561 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 03:58:56,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-17 03:58:56,766 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1885503363, now seen corresponding path program 3 times [2023-02-17 03:58:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57633030] [2023-02-17 03:58:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 68 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 03:58:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:56,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57633030] [2023-02-17 03:58:56,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57633030] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201245561] [2023-02-17 03:58:56,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 03:58:56,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:56,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 03:58:56,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-17 03:58:56,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:58:56,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 03:58:56,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-17 03:58:56,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-17 03:58:56,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201245561] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:56,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:56,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-02-17 03:58:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235399111] [2023-02-17 03:58:56,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 03:58:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 03:58:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-02-17 03:58:56,911 INFO L87 Difference]: Start difference. First operand 306 states and 359 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:57,005 INFO L93 Difference]: Finished difference Result 369 states and 432 transitions. [2023-02-17 03:58:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:58:57,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-17 03:58:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:57,006 INFO L225 Difference]: With dead ends: 369 [2023-02-17 03:58:57,007 INFO L226 Difference]: Without dead ends: 142 [2023-02-17 03:58:57,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-02-17 03:58:57,010 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 77 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:58:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-17 03:58:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2023-02-17 03:58:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2023-02-17 03:58:57,024 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 50 [2023-02-17 03:58:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:57,025 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2023-02-17 03:58:57,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2023-02-17 03:58:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-17 03:58:57,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:57,026 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:58:57,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:57,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-17 03:58:57,232 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1446440850, now seen corresponding path program 4 times [2023-02-17 03:58:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498399427] [2023-02-17 03:58:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:57,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498399427] [2023-02-17 03:58:57,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498399427] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685825136] [2023-02-17 03:58:57,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 03:58:57,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:57,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:57,470 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:57,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 03:58:57,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 03:58:57,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:58:57,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 03:58:57,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:57,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:57,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685825136] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:57,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:57,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2023-02-17 03:58:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665629908] [2023-02-17 03:58:57,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:57,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-17 03:58:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:57,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-17 03:58:57,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2023-02-17 03:58:57,849 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:58:58,805 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2023-02-17 03:58:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-02-17 03:58:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-17 03:58:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:58:58,810 INFO L225 Difference]: With dead ends: 247 [2023-02-17 03:58:58,810 INFO L226 Difference]: Without dead ends: 246 [2023-02-17 03:58:58,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 86 SyntacticMatches, 16 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3701 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2303, Invalid=9907, Unknown=0, NotChecked=0, Total=12210 [2023-02-17 03:58:58,813 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 652 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:58:58,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 94 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:58:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-17 03:58:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2023-02-17 03:58:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 198 states have (on average 1.0303030303030303) internal successors, (204), 198 states have internal predecessors, (204), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 243 transitions. [2023-02-17 03:58:58,831 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 243 transitions. Word has length 62 [2023-02-17 03:58:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:58:58,831 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 243 transitions. [2023-02-17 03:58:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:58:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 243 transitions. [2023-02-17 03:58:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-17 03:58:58,832 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:58:58,833 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-02-17 03:58:58,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 03:58:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-17 03:58:59,037 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:58:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:58:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2023-02-17 03:58:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:58:59,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629399919] [2023-02-17 03:58:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:58:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:58:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:58:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:58:59,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629399919] [2023-02-17 03:58:59,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629399919] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:58:59,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106965577] [2023-02-17 03:58:59,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:58:59,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:58:59,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:58:59,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:58:59,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 03:58:59,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:58:59,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:58:59,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 03:58:59,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:58:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:59,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:58:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:58:59,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106965577] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:58:59,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:58:59,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2023-02-17 03:58:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878976685] [2023-02-17 03:58:59,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:58:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-17 03:58:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:58:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-17 03:58:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2023-02-17 03:58:59,999 INFO L87 Difference]: Start difference. First operand 238 states and 243 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:59:00,614 INFO L93 Difference]: Finished difference Result 279 states and 286 transitions. [2023-02-17 03:59:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-17 03:59:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-17 03:59:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:59:00,616 INFO L225 Difference]: With dead ends: 279 [2023-02-17 03:59:00,616 INFO L226 Difference]: Without dead ends: 278 [2023-02-17 03:59:00,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 108 SyntacticMatches, 24 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1350, Invalid=7392, Unknown=0, NotChecked=0, Total=8742 [2023-02-17 03:59:00,619 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 338 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:59:00,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 165 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:59:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-02-17 03:59:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2023-02-17 03:59:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2023-02-17 03:59:00,639 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 80 [2023-02-17 03:59:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:59:00,640 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2023-02-17 03:59:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2023-02-17 03:59:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-02-17 03:59:00,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:59:00,643 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:59:00,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 03:59:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:00,849 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:59:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:59:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash -168402537, now seen corresponding path program 5 times [2023-02-17 03:59:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:59:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106022611] [2023-02-17 03:59:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:59:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:59:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:59:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:01,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:59:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106022611] [2023-02-17 03:59:01,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106022611] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:59:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579990530] [2023-02-17 03:59:01,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 03:59:01,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:01,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:59:01,569 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:59:01,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 03:59:01,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-02-17 03:59:01,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:59:01,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 03:59:01,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:59:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:02,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:59:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:03,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579990530] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:59:03,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:59:03,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2023-02-17 03:59:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656180725] [2023-02-17 03:59:03,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:59:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-17 03:59:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:59:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-17 03:59:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2023-02-17 03:59:03,033 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:06,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:59:06,396 INFO L93 Difference]: Finished difference Result 496 states and 526 transitions. [2023-02-17 03:59:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-02-17 03:59:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-02-17 03:59:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:59:06,399 INFO L225 Difference]: With dead ends: 496 [2023-02-17 03:59:06,399 INFO L226 Difference]: Without dead ends: 495 [2023-02-17 03:59:06,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 172 SyntacticMatches, 40 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17837 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9505, Invalid=41797, Unknown=0, NotChecked=0, Total=51302 [2023-02-17 03:59:06,405 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1152 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:59:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 97 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:59:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-02-17 03:59:06,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 484. [2023-02-17 03:59:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 403 states have (on average 1.022332506203474) internal successors, (412), 403 states have internal predecessors, (412), 80 states have call successors, (80), 80 states have call predecessors, (80), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 492 transitions. [2023-02-17 03:59:06,441 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 492 transitions. Word has length 128 [2023-02-17 03:59:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:59:06,441 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 492 transitions. [2023-02-17 03:59:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 492 transitions. [2023-02-17 03:59:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-17 03:59:06,445 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:59:06,445 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2023-02-17 03:59:06,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 03:59:06,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:06,652 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:59:06,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:59:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 734997364, now seen corresponding path program 3 times [2023-02-17 03:59:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:59:06,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977231258] [2023-02-17 03:59:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:59:06,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:59:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:59:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:59:07,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977231258] [2023-02-17 03:59:07,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977231258] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:59:07,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016048895] [2023-02-17 03:59:07,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 03:59:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:59:07,707 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:59:07,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 03:59:07,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-17 03:59:07,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:59:07,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-17 03:59:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:59:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:08,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:59:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:09,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016048895] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:59:09,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:59:09,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 111 [2023-02-17 03:59:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010501701] [2023-02-17 03:59:09,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:59:09,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-02-17 03:59:09,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:59:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-02-17 03:59:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1628, Invalid=10804, Unknown=0, NotChecked=0, Total=12432 [2023-02-17 03:59:09,899 INFO L87 Difference]: Start difference. First operand 484 states and 492 transitions. Second operand has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:59:12,074 INFO L93 Difference]: Finished difference Result 577 states and 591 transitions. [2023-02-17 03:59:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-02-17 03:59:12,075 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-02-17 03:59:12,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:59:12,077 INFO L225 Difference]: With dead ends: 577 [2023-02-17 03:59:12,077 INFO L226 Difference]: Without dead ends: 576 [2023-02-17 03:59:12,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 220 SyntacticMatches, 52 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13233 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5438, Invalid=31234, Unknown=0, NotChecked=0, Total=36672 [2023-02-17 03:59:12,079 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 849 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:59:12,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 287 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:59:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-02-17 03:59:12,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 562. [2023-02-17 03:59:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 468 states have (on average 1.017094017094017) internal successors, (476), 468 states have internal predecessors, (476), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 569 transitions. [2023-02-17 03:59:12,114 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 569 transitions. Word has length 164 [2023-02-17 03:59:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:59:12,114 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 569 transitions. [2023-02-17 03:59:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 569 transitions. [2023-02-17 03:59:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-02-17 03:59:12,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:59:12,117 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:59:12,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-17 03:59:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:12,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:59:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:59:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1178058702, now seen corresponding path program 6 times [2023-02-17 03:59:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:59:12,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281125581] [2023-02-17 03:59:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:59:12,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:59:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:59:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:59:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281125581] [2023-02-17 03:59:14,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281125581] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:59:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276271527] [2023-02-17 03:59:14,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 03:59:14,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:59:14,752 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:59:14,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 03:59:14,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-02-17 03:59:14,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:59:14,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-17 03:59:14,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:59:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:16,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:59:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276271527] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:59:19,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:59:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 171 [2023-02-17 03:59:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138053040] [2023-02-17 03:59:19,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:59:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2023-02-17 03:59:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:59:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2023-02-17 03:59:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3786, Invalid=25626, Unknown=0, NotChecked=0, Total=29412 [2023-02-17 03:59:19,611 INFO L87 Difference]: Start difference. First operand 562 states and 569 transitions. Second operand has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:59:33,302 INFO L93 Difference]: Finished difference Result 1026 states and 1090 transitions. [2023-02-17 03:59:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 379 states. [2023-02-17 03:59:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-02-17 03:59:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:59:33,306 INFO L225 Difference]: With dead ends: 1026 [2023-02-17 03:59:33,306 INFO L226 Difference]: Without dead ends: 1025 [2023-02-17 03:59:33,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 342 SyntacticMatches, 80 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76165 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=39231, Invalid=174675, Unknown=0, NotChecked=0, Total=213906 [2023-02-17 03:59:33,316 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4780 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 03:59:33,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 114 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 03:59:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-02-17 03:59:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1006. [2023-02-17 03:59:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 838 states have (on average 1.0202863961813842) internal successors, (855), 838 states have internal predecessors, (855), 167 states have call successors, (167), 167 states have call predecessors, (167), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1022 transitions. [2023-02-17 03:59:33,401 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1022 transitions. Word has length 254 [2023-02-17 03:59:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:59:33,402 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1022 transitions. [2023-02-17 03:59:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1022 transitions. [2023-02-17 03:59:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-17 03:59:33,405 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:59:33,406 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2023-02-17 03:59:33,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 03:59:33,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:33,611 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:59:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:59:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash 95073512, now seen corresponding path program 4 times [2023-02-17 03:59:33,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:59:33,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035488640] [2023-02-17 03:59:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:59:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:59:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:59:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:59:37,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035488640] [2023-02-17 03:59:37,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035488640] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:59:37,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354350200] [2023-02-17 03:59:37,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 03:59:37,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:59:37,645 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:59:37,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 03:59:37,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 03:59:37,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:59:37,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 112 conjunts are in the unsatisfiable core [2023-02-17 03:59:37,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:59:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:40,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:59:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:59:45,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354350200] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:59:45,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:59:45,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 223 [2023-02-17 03:59:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967868874] [2023-02-17 03:59:45,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:59:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-02-17 03:59:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:59:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-02-17 03:59:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6388, Invalid=43564, Unknown=0, NotChecked=0, Total=49952 [2023-02-17 03:59:45,578 INFO L87 Difference]: Start difference. First operand 1006 states and 1022 transitions. Second operand has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:59:53,368 INFO L93 Difference]: Finished difference Result 1177 states and 1205 transitions. [2023-02-17 03:59:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2023-02-17 03:59:53,369 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-02-17 03:59:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:59:53,372 INFO L225 Difference]: With dead ends: 1177 [2023-02-17 03:59:53,372 INFO L226 Difference]: Without dead ends: 1176 [2023-02-17 03:59:53,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 444 SyntacticMatches, 108 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57347 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=21846, Invalid=128310, Unknown=0, NotChecked=0, Total=150156 [2023-02-17 03:59:53,381 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2072 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:59:53,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 471 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 03:59:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-02-17 03:59:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2023-02-17 03:59:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 963 states have (on average 1.0145379023883696) internal successors, (977), 963 states have internal predecessors, (977), 192 states have call successors, (192), 192 states have call predecessors, (192), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1169 transitions. [2023-02-17 03:59:53,457 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1169 transitions. Word has length 332 [2023-02-17 03:59:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:59:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1169 transitions. [2023-02-17 03:59:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:59:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1169 transitions. [2023-02-17 03:59:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-02-17 03:59:53,466 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:59:53,467 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 84, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:59:53,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-17 03:59:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:59:53,672 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 03:59:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:59:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1663037353, now seen corresponding path program 7 times [2023-02-17 03:59:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:59:53,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053418956] [2023-02-17 03:59:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:59:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:59:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:00:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:00:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:00:03,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053418956] [2023-02-17 04:00:03,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053418956] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:00:03,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264754629] [2023-02-17 04:00:03,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 04:00:03,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:00:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:00:03,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:00:03,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 04:00:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:00:03,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 172 conjunts are in the unsatisfiable core [2023-02-17 04:00:03,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:00:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:00:09,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:00:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:00:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264754629] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:00:22,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:00:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172, 172] total 343 [2023-02-17 04:00:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959218040] [2023-02-17 04:00:22,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:00:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 344 states [2023-02-17 04:00:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:00:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2023-02-17 04:00:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14968, Invalid=103024, Unknown=0, NotChecked=0, Total=117992 [2023-02-17 04:00:22,243 INFO L87 Difference]: Start difference. First operand 1156 states and 1169 transitions. Second operand has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:01:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:18,993 INFO L93 Difference]: Finished difference Result 2054 states and 2180 transitions. [2023-02-17 04:01:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 759 states. [2023-02-17 04:01:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-02-17 04:01:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:19,010 INFO L225 Difference]: With dead ends: 2054 [2023-02-17 04:01:19,011 INFO L226 Difference]: Without dead ends: 2053 [2023-02-17 04:01:19,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 684 SyntacticMatches, 168 SemanticMatches, 929 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326157 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=158113, Invalid=707717, Unknown=0, NotChecked=0, Total=865830 [2023-02-17 04:01:19,055 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6362 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6362 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-17 04:01:19,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6362 Valid, 170 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-17 04:01:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-02-17 04:01:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2020. [2023-02-17 04:01:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1683 states have (on average 1.0184194890077243) internal successors, (1714), 1683 states have internal predecessors, (1714), 336 states have call successors, (336), 336 states have call predecessors, (336), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:01:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2050 transitions. [2023-02-17 04:01:19,190 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2050 transitions. Word has length 512 [2023-02-17 04:01:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2050 transitions. [2023-02-17 04:01:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:01:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2050 transitions. [2023-02-17 04:01:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-02-17 04:01:19,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:19,197 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 1, 1, 1, 1, 1] [2023-02-17 04:01:19,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-02-17 04:01:19,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:19,403 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-17 04:01:19,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1041726416, now seen corresponding path program 5 times [2023-02-17 04:01:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:19,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309931460] [2023-02-17 04:01:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:38,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309931460] [2023-02-17 04:01:38,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309931460] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543843503] [2023-02-17 04:01:38,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:01:38,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:38,850 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:01:38,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 04:01:39,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 111 check-sat command(s) [2023-02-17 04:01:39,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:39,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 224 conjunts are in the unsatisfiable core [2023-02-17 04:01:39,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:48,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:02:10,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543843503] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:10,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:10,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224, 224] total 447 [2023-02-17 04:02:10,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394416561] [2023-02-17 04:02:10,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:10,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 448 states [2023-02-17 04:02:10,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 448 interpolants. [2023-02-17 04:02:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25316, Invalid=174940, Unknown=0, NotChecked=0, Total=200256 [2023-02-17 04:02:10,210 INFO L87 Difference]: Start difference. First operand 2020 states and 2050 transitions. Second operand has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)