./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e 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/NestedRecursion_1b.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 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 23:16:52,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 23:16:52,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 23:16:52,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 23:16:52,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 23:16:52,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 23:16:52,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 23:16:52,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 23:16:52,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 23:16:52,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 23:16:52,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 23:16:52,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 23:16:52,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 23:16:52,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 23:16:52,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 23:16:52,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 23:16:52,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 23:16:52,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 23:16:52,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 23:16:52,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 23:16:52,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 23:16:52,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 23:16:52,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 23:16:52,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 23:16:52,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 23:16:52,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 23:16:52,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 23:16:52,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 23:16:52,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 23:16:52,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 23:16:52,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 23:16:52,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 23:16:52,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 23:16:52,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 23:16:52,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 23:16:52,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 23:16:52,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 23:16:52,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 23:16:52,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 23:16:52,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 23:16:52,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 23:16:52,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 23:16:52,259 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 23:16:52,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 23:16:52,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 23:16:52,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 23:16:52,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 23:16:52,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 23:16:52,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 23:16:52,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 23:16:52,261 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 23:16:52,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 23:16:52,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 23:16:52,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 23:16:52,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 23:16:52,263 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 23:16:52,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 23:16:52,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 23:16:52,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 23:16:52,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 23:16:52,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:16:52,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 23:16:52,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 23:16:52,265 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 23:16:52,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 23:16:52,266 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 23:16:52,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2023-02-18 23:16:52,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 23:16:52,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 23:16:52,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 23:16:52,444 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 23:16:52,444 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 23:16:52,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-18 23:16:53,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 23:16:53,566 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 23:16:53,567 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-18 23:16:53,570 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0335a67d4/8c3d4ee93bbe469cac4dd11489cdf390/FLAGac7d95065 [2023-02-18 23:16:53,579 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0335a67d4/8c3d4ee93bbe469cac4dd11489cdf390 [2023-02-18 23:16:53,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 23:16:53,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 23:16:53,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 23:16:53,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 23:16:53,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 23:16:53,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7c902b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53, skipping insertion in model container [2023-02-18 23:16:53,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 23:16:53,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 23:16:53,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:16:53,682 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 23:16:53,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:16:53,703 INFO L208 MainTranslator]: Completed translation [2023-02-18 23:16:53,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53 WrapperNode [2023-02-18 23:16:53,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 23:16:53,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 23:16:53,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 23:16:53,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 23:16:53,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,720 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-18 23:16:53,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 23:16:53,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 23:16:53,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 23:16:53,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 23:16:53,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 23:16:53,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 23:16:53,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 23:16:53,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 23:16:53,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (1/1) ... [2023-02-18 23:16:53,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:16:53,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:53,762 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) [2023-02-18 23:16:53,802 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 [2023-02-18 23:16:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2023-02-18 23:16:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2023-02-18 23:16:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2023-02-18 23:16:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2023-02-18 23:16:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 23:16:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 23:16:53,848 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 23:16:53,850 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 23:16:53,978 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 23:16:53,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 23:16:53,983 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 23:16:53,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:16:53 BoogieIcfgContainer [2023-02-18 23:16:53,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 23:16:53,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 23:16:53,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 23:16:53,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 23:16:53,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:16:53" (1/3) ... [2023-02-18 23:16:53,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1063f411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:16:53, skipping insertion in model container [2023-02-18 23:16:53,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:16:53" (2/3) ... [2023-02-18 23:16:53,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1063f411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:16:53, skipping insertion in model container [2023-02-18 23:16:53,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:16:53" (3/3) ... [2023-02-18 23:16:53,990 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1b.c [2023-02-18 23:16:54,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 23:16:54,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-02-18 23:16:54,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 23:16:54,045 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;@40bf7a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 23:16:54,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-02-18 23:16:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 23:16:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:16:54,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2132374368, now seen corresponding path program 1 times [2023-02-18 23:16:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447947176] [2023-02-18 23:16:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:16:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447947176] [2023-02-18 23:16:54,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447947176] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:16:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250590547] [2023-02-18 23:16:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:16:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:16:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:54,202 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-18 23:16:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,224 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-02-18 23:16:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:16:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-02-18 23:16:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,230 INFO L225 Difference]: With dead ends: 47 [2023-02-18 23:16:54,230 INFO L226 Difference]: Without dead ends: 42 [2023-02-18 23:16:54,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:54,235 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-18 23:16:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-02-18 23:16:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 23:16:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-02-18 23:16:54,259 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2023-02-18 23:16:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,259 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-02-18 23:16:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-18 23:16:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-02-18 23:16:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 23:16:54,260 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 23:16:54,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1679096030, now seen corresponding path program 1 times [2023-02-18 23:16:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108957441] [2023-02-18 23:16:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:16:54,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108957441] [2023-02-18 23:16:54,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108957441] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 23:16:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939603647] [2023-02-18 23:16:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 23:16:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 23:16:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:16:54,329 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-18 23:16:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,376 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-02-18 23:16:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 23:16:54,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2023-02-18 23:16:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,378 INFO L225 Difference]: With dead ends: 57 [2023-02-18 23:16:54,378 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 23:16:54,378 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 [2023-02-18 23:16:54,379 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 157 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 23:16:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-18 23:16:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 23:16:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-18 23:16:54,386 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 7 [2023-02-18 23:16:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,386 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-18 23:16:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-18 23:16:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-18 23:16:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 23:16:54,387 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 23:16:54,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -315038040, now seen corresponding path program 1 times [2023-02-18 23:16:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011958198] [2023-02-18 23:16:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:16:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011958198] [2023-02-18 23:16:54,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011958198] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:16:54,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345457460] [2023-02-18 23:16:54,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:16:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:16:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:54,415 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:16:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,426 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2023-02-18 23:16:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:16:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 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 11 [2023-02-18 23:16:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,427 INFO L225 Difference]: With dead ends: 52 [2023-02-18 23:16:54,428 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 23:16:54,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:54,430 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 23:16:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-18 23:16:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 23:16:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-18 23:16:54,436 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 11 [2023-02-18 23:16:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,436 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-18 23:16:54,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:16:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-18 23:16:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 23:16:54,440 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 23:16:54,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1176244610, now seen corresponding path program 1 times [2023-02-18 23:16:54,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727136872] [2023-02-18 23:16:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:16:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727136872] [2023-02-18 23:16:54,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727136872] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 23:16:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321674237] [2023-02-18 23:16:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 23:16:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 23:16:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 23:16:54,524 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-02-18 23:16:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,604 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2023-02-18 23:16:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 23:16:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2023-02-18 23:16:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,605 INFO L225 Difference]: With dead ends: 76 [2023-02-18 23:16:54,606 INFO L226 Difference]: Without dead ends: 75 [2023-02-18 23:16:54,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 23:16:54,607 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 189 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:16:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-18 23:16:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-02-18 23:16:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.372093023255814) internal successors, (59), 50 states have internal predecessors, (59), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 23:16:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2023-02-18 23:16:54,615 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 12 [2023-02-18 23:16:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,616 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2023-02-18 23:16:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-02-18 23:16:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2023-02-18 23:16:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 23:16:54,616 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 23:16:54,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2079532187, now seen corresponding path program 1 times [2023-02-18 23:16:54,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100487305] [2023-02-18 23:16:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:16:54,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100487305] [2023-02-18 23:16:54,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100487305] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 23:16:54,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492359825] [2023-02-18 23:16:54,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:54,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:16:54,710 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,750 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2023-02-18 23:16:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:16:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-18 23:16:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,752 INFO L225 Difference]: With dead ends: 126 [2023-02-18 23:16:54,752 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 23:16:54,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 23:16:54,754 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 23:16:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2023-02-18 23:16:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.32) internal successors, (66), 59 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-18 23:16:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-18 23:16:54,763 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 18 [2023-02-18 23:16:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,764 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-18 23:16:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-18 23:16:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 23:16:54,765 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 23:16:54,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash 643212051, now seen corresponding path program 1 times [2023-02-18 23:16:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255767561] [2023-02-18 23:16:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:16:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255767561] [2023-02-18 23:16:54,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255767561] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:16:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346607087] [2023-02-18 23:16:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:16:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:16:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:54,798 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,830 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2023-02-18 23:16:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:16:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-18 23:16:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,832 INFO L225 Difference]: With dead ends: 98 [2023-02-18 23:16:54,832 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 23:16:54,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:54,833 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 112 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 23:16:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2023-02-18 23:16:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 61 states have internal predecessors, (70), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-18 23:16:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-02-18 23:16:54,854 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 19 [2023-02-18 23:16:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,854 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-02-18 23:16:54,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-02-18 23:16:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 23:16:54,855 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 23:16:54,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1270071308, now seen corresponding path program 1 times [2023-02-18 23:16:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902659091] [2023-02-18 23:16:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 23:16:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:16:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:54,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902659091] [2023-02-18 23:16:54,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902659091] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:54,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:54,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:16:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970459552] [2023-02-18 23:16:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:16:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:16:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:54,924 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:54,938 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2023-02-18 23:16:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:16:54,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-18 23:16:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:54,940 INFO L225 Difference]: With dead ends: 90 [2023-02-18 23:16:54,940 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 23:16:54,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:54,941 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:54,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 23:16:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2023-02-18 23:16:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.271186440677966) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (22), 16 states have call predecessors, (22), 12 states have call successors, (22) [2023-02-18 23:16:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2023-02-18 23:16:54,957 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 20 [2023-02-18 23:16:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:54,957 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2023-02-18 23:16:54,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2023-02-18 23:16:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 23:16:54,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:54,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:54,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 23:16:54,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1535262855, now seen corresponding path program 1 times [2023-02-18 23:16:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647340954] [2023-02-18 23:16:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:16:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647340954] [2023-02-18 23:16:55,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647340954] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:16:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371049355] [2023-02-18 23:16:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:16:55,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:16:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,010 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,025 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2023-02-18 23:16:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:16:55,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-18 23:16:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,027 INFO L225 Difference]: With dead ends: 87 [2023-02-18 23:16:55,027 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 23:16:55,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,028 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 23:16:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-18 23:16:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 64 states have internal predecessors, (73), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (22), 16 states have call predecessors, (22), 12 states have call successors, (22) [2023-02-18 23:16:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2023-02-18 23:16:55,036 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 20 [2023-02-18 23:16:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,036 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2023-02-18 23:16:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2023-02-18 23:16:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 23:16:55,041 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,044 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 23:16:55,045 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash 717504954, now seen corresponding path program 1 times [2023-02-18 23:16:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428545342] [2023-02-18 23:16:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 23:16:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:16:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428545342] [2023-02-18 23:16:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428545342] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:16:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333214058] [2023-02-18 23:16:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:16:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:16:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,068 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,073 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-02-18 23:16:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:16:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-02-18 23:16:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,074 INFO L225 Difference]: With dead ends: 86 [2023-02-18 23:16:55,074 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 23:16:55,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,075 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 77 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 23:16:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-18 23:16:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 60 states have internal predecessors, (67), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-18 23:16:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2023-02-18 23:16:55,082 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 21 [2023-02-18 23:16:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,082 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2023-02-18 23:16:55,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2023-02-18 23:16:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 23:16:55,083 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,083 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 23:16:55,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1649259199, now seen corresponding path program 1 times [2023-02-18 23:16:55,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153896114] [2023-02-18 23:16:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:16:55,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153896114] [2023-02-18 23:16:55,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153896114] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 23:16:55,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405117081] [2023-02-18 23:16:55,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:16:55,150 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,210 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2023-02-18 23:16:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:16:55,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-02-18 23:16:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,212 INFO L225 Difference]: With dead ends: 163 [2023-02-18 23:16:55,212 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 23:16:55,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-18 23:16:55,213 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 182 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 23:16:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-02-18 23:16:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.2) internal successors, (72), 67 states have internal predecessors, (72), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (21), 14 states have call predecessors, (21), 13 states have call successors, (21) [2023-02-18 23:16:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2023-02-18 23:16:55,224 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 25 [2023-02-18 23:16:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,224 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2023-02-18 23:16:55,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 23:16:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2023-02-18 23:16:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 23:16:55,225 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,225 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 23:16:55,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1854006348, now seen corresponding path program 1 times [2023-02-18 23:16:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662666304] [2023-02-18 23:16:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 23:16:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-18 23:16:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 23:16:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662666304] [2023-02-18 23:16:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662666304] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 23:16:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373476635] [2023-02-18 23:16:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:16:55,269 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,302 INFO L93 Difference]: Finished difference Result 173 states and 223 transitions. [2023-02-18 23:16:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:16:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-02-18 23:16:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,304 INFO L225 Difference]: With dead ends: 173 [2023-02-18 23:16:55,304 INFO L226 Difference]: Without dead ends: 104 [2023-02-18 23:16:55,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-18 23:16:55,305 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 186 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-18 23:16:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2023-02-18 23:16:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 72 states have internal predecessors, (77), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 23:16:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-02-18 23:16:55,312 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 36 [2023-02-18 23:16:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,313 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-02-18 23:16:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 23:16:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-02-18 23:16:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 23:16:55,314 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,314 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 23:16:55,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash -711697781, now seen corresponding path program 1 times [2023-02-18 23:16:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030208363] [2023-02-18 23:16:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 23:16:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-18 23:16:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-18 23:16:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 23:16:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030208363] [2023-02-18 23:16:55,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030208363] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:16:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557844373] [2023-02-18 23:16:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:16:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:16:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,337 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 23:16:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,343 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-18 23:16:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:16:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-02-18 23:16:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,344 INFO L225 Difference]: With dead ends: 96 [2023-02-18 23:16:55,344 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 23:16:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:16:55,345 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 23:16:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-18 23:16:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 23:16:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-02-18 23:16:55,351 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 38 [2023-02-18 23:16:55,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,351 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-02-18 23:16:55,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 23:16:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-02-18 23:16:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 23:16:55,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,352 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 23:16:55,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 750310703, now seen corresponding path program 1 times [2023-02-18 23:16:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409848766] [2023-02-18 23:16:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-18 23:16:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 23:16:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 23:16:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409848766] [2023-02-18 23:16:55,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409848766] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:16:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562102660] [2023-02-18 23:16:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:16:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:16:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:55,379 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 23:16:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,392 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-02-18 23:16:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:16:55,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-02-18 23:16:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,393 INFO L225 Difference]: With dead ends: 102 [2023-02-18 23:16:55,393 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 23:16:55,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:16:55,394 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 23:16:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-18 23:16:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 75 states have internal predecessors, (81), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 23:16:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2023-02-18 23:16:55,399 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 34 [2023-02-18 23:16:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,399 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2023-02-18 23:16:55,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 23:16:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2023-02-18 23:16:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-18 23:16:55,401 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,401 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 23:16:55,401 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 188454727, now seen corresponding path program 1 times [2023-02-18 23:16:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124124210] [2023-02-18 23:16:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-18 23:16:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124124210] [2023-02-18 23:16:55,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124124210] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:16:55,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 23:16:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079863486] [2023-02-18 23:16:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:55,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:16:55,456 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,507 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2023-02-18 23:16:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:16:55,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-02-18 23:16:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,511 INFO L225 Difference]: With dead ends: 111 [2023-02-18 23:16:55,511 INFO L226 Difference]: Without dead ends: 110 [2023-02-18 23:16:55,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 23:16:55,512 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-18 23:16:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2023-02-18 23:16:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 74 states have internal predecessors, (79), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 23:16:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2023-02-18 23:16:55,524 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 43 [2023-02-18 23:16:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,525 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2023-02-18 23:16:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2023-02-18 23:16:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 23:16:55,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 23:16:55,530 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 195579087, now seen corresponding path program 1 times [2023-02-18 23:16:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917035322] [2023-02-18 23:16:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 23:16:55,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917035322] [2023-02-18 23:16:55,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917035322] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746894959] [2023-02-18 23:16:55,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:55,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:55,597 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) [2023-02-18 23:16:55,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 23:16:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:55,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 23:16:55,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 23:16:55,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 23:16:55,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746894959] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:55,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 23:16:55,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-18 23:16:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040162126] [2023-02-18 23:16:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-18 23:16:55,711 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:55,776 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2023-02-18 23:16:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:16:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-02-18 23:16:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:55,778 INFO L225 Difference]: With dead ends: 101 [2023-02-18 23:16:55,778 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 23:16:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-18 23:16:55,780 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 156 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 23:16:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-02-18 23:16:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 73 states have internal predecessors, (78), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-18 23:16:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-02-18 23:16:55,788 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 42 [2023-02-18 23:16:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:55,788 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-02-18 23:16:55,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-02-18 23:16:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-18 23:16:55,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:55,792 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:55,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 23:16:55,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 23:16:55,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 725769945, now seen corresponding path program 1 times [2023-02-18 23:16:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:55,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012033390] [2023-02-18 23:16:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 23:16:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-18 23:16:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012033390] [2023-02-18 23:16:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012033390] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21734490] [2023-02-18 23:16:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:56,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:56,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:56,093 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) [2023-02-18 23:16:56,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 23:16:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 23:16:56,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 23:16:56,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 23:16:56,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21734490] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:56,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 23:16:56,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-18 23:16:56,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919512381] [2023-02-18 23:16:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:56,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:16:56,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:16:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-18 23:16:56,214 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:56,285 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2023-02-18 23:16:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 23:16:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2023-02-18 23:16:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:56,286 INFO L225 Difference]: With dead ends: 128 [2023-02-18 23:16:56,287 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 23:16:56,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-02-18 23:16:56,287 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:56,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 163 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 23:16:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2023-02-18 23:16:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.098901098901099) internal successors, (100), 93 states have internal predecessors, (100), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 24 states have call predecessors, (31), 20 states have call successors, (31) [2023-02-18 23:16:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2023-02-18 23:16:56,294 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 54 [2023-02-18 23:16:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:56,294 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2023-02-18 23:16:56,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2023-02-18 23:16:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 23:16:56,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:56,295 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:56,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 23:16:56,499 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,SelfDestructingSolverStorable15 [2023-02-18 23:16:56,500 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 330066221, now seen corresponding path program 1 times [2023-02-18 23:16:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:56,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142231529] [2023-02-18 23:16:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 23:16:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142231529] [2023-02-18 23:16:56,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142231529] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968056172] [2023-02-18 23:16:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:56,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:56,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:56,581 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) [2023-02-18 23:16:56,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 23:16:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:56,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 23:16:56,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 23:16:56,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 23:16:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968056172] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:16:56,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 23:16:56,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-02-18 23:16:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294403349] [2023-02-18 23:16:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:16:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 23:16:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:56,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 23:16:56,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-02-18 23:16:56,720 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:56,764 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2023-02-18 23:16:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 23:16:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2023-02-18 23:16:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:56,765 INFO L225 Difference]: With dead ends: 155 [2023-02-18 23:16:56,766 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 23:16:56,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-02-18 23:16:56,767 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:56,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 111 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 23:16:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-02-18 23:16:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 113 states have internal predecessors, (122), 26 states have call successors, (26), 9 states have call predecessors, (26), 13 states have return successors, (39), 30 states have call predecessors, (39), 25 states have call successors, (39) [2023-02-18 23:16:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2023-02-18 23:16:56,776 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 47 [2023-02-18 23:16:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:56,777 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2023-02-18 23:16:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 23:16:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2023-02-18 23:16:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 23:16:56,778 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:56,778 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:56,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 23:16:56,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:56,983 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:56,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732833, now seen corresponding path program 1 times [2023-02-18 23:16:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:56,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337324120] [2023-02-18 23:16:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-18 23:16:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 23:16:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 23:16:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337324120] [2023-02-18 23:16:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337324120] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306739274] [2023-02-18 23:16:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:57,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:57,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:57,079 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) [2023-02-18 23:16:57,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 23:16:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 23:16:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 23:16:57,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:16:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 23:16:57,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306739274] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:16:57,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:16:57,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-18 23:16:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150468180] [2023-02-18 23:16:57,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:16:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 23:16:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 23:16:57,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-18 23:16:57,176 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 23:16:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:57,199 INFO L93 Difference]: Finished difference Result 175 states and 214 transitions. [2023-02-18 23:16:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 23:16:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2023-02-18 23:16:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:57,200 INFO L225 Difference]: With dead ends: 175 [2023-02-18 23:16:57,200 INFO L226 Difference]: Without dead ends: 168 [2023-02-18 23:16:57,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-18 23:16:57,202 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:57,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-18 23:16:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-02-18 23:16:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 123 states have (on average 1.089430894308943) internal successors, (134), 125 states have internal predecessors, (134), 26 states have call successors, (26), 9 states have call predecessors, (26), 16 states have return successors, (42), 33 states have call predecessors, (42), 25 states have call successors, (42) [2023-02-18 23:16:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 202 transitions. [2023-02-18 23:16:57,211 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 202 transitions. Word has length 60 [2023-02-18 23:16:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:57,211 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 202 transitions. [2023-02-18 23:16:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 23:16:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 202 transitions. [2023-02-18 23:16:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-18 23:16:57,212 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:57,212 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:57,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 23:16:57,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 23:16:57,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1564735666, now seen corresponding path program 2 times [2023-02-18 23:16:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460973889] [2023-02-18 23:16:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:57,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 23:16:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 23:16:57,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460973889] [2023-02-18 23:16:57,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460973889] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953746331] [2023-02-18 23:16:57,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:16:57,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:57,507 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) [2023-02-18 23:16:57,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 23:16:57,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:16:57,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:16:57,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 23:16:57,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 23:16:57,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:16:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 23:16:57,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953746331] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:16:57,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:16:57,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2023-02-18 23:16:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496125285] [2023-02-18 23:16:57,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:16:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 23:16:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 23:16:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-02-18 23:16:57,619 INFO L87 Difference]: Start difference. First operand 168 states and 202 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 23:16:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:57,666 INFO L93 Difference]: Finished difference Result 273 states and 334 transitions. [2023-02-18 23:16:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 23:16:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2023-02-18 23:16:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:57,667 INFO L225 Difference]: With dead ends: 273 [2023-02-18 23:16:57,667 INFO L226 Difference]: Without dead ends: 106 [2023-02-18 23:16:57,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-02-18 23:16:57,668 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:57,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 119 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:16:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-18 23:16:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2023-02-18 23:16:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 12 states have call successors, (12), 7 states have call predecessors, (12), 12 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-18 23:16:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2023-02-18 23:16:57,683 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 79 [2023-02-18 23:16:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:57,683 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2023-02-18 23:16:57,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 23:16:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2023-02-18 23:16:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-02-18 23:16:57,686 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:16:57,686 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 21, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-02-18 23:16:57,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 23:16:57,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:57,891 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 23:16:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:16:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash -735274848, now seen corresponding path program 2 times [2023-02-18 23:16:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:16:57,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456632021] [2023-02-18 23:16:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:16:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:16:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 23:16:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-18 23:16:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-18 23:16:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-02-18 23:16:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 23:16:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 23:16:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 23:16:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 23:16:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 23:16:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 23:16:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 23:16:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:16:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-18 23:16:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:16:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456632021] [2023-02-18 23:16:58,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456632021] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:16:58,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505587738] [2023-02-18 23:16:58,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:16:58,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:58,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:16:58,102 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) [2023-02-18 23:16:58,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 23:16:58,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:16:58,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:16:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 23:16:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:16:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 862 proven. 24 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-02-18 23:16:58,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:16:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-18 23:16:58,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505587738] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:16:58,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:16:58,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 13 [2023-02-18 23:16:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104883611] [2023-02-18 23:16:58,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:16:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 23:16:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:16:58,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 23:16:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 23:16:58,291 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-02-18 23:16:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:16:58,399 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2023-02-18 23:16:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 23:16:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 274 [2023-02-18 23:16:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:16:58,400 INFO L225 Difference]: With dead ends: 138 [2023-02-18 23:16:58,400 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 23:16:58,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 601 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-18 23:16:58,400 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:16:58,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 164 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:16:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 23:16:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 23:16:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:16:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 23:16:58,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2023-02-18 23:16:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:16:58,402 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 23:16:58,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-02-18 23:16:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 23:16:58,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 23:16:58,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-02-18 23:16:58,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-02-18 23:16:58,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-02-18 23:16:58,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 23:16:58,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:16:58,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,621 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,622 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-18 23:16:58,622 INFO L895 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse11 (+ |rec1_#in~i| 1))) (let ((.cse10 (<= .cse11 2147483647))) (let ((.cse1 (not .cse10)) (.cse4 (= |rec1_#in~i| rec1_~i)) (.cse6 (<= 0 (+ rec1_~i (- 1)))) (.cse9 (<= rec1_~i 2147483646)) (.cse3 (<= .cse11 2147483648))) (let ((.cse2 (not .cse3)) (.cse5 (<= rec1_~i 2147483647)) (.cse7 (and .cse10 .cse4 .cse6 .cse9)) (.cse0 (or .cse1 (not (<= |rec1_#in~i| (- 1)))))) (and .cse0 .cse1 (or .cse2 (and .cse3 .cse4 .cse5 .cse6)) (or .cse7 .cse1) (let ((.cse8 (<= |rec1_#in~i| 2147483646))) (or .cse2 (not .cse8) (and .cse3 .cse4 .cse5 .cse6 .cse8 .cse9))) (or .cse7 (and .cse0 .cse1)) (not (<= |rec1_#in~i| 0))))))) [2023-02-18 23:16:58,622 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,622 INFO L899 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,622 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: (let ((.cse1 (<= |rec1_#in~i| (- 1))) (.cse0 (<= (+ |rec1_#in~i| 1) 2147483647))) (or .cse0 (and .cse0 .cse1) (let ((.cse2 (not .cse0))) (and (or .cse2 (not .cse1)) .cse2)))) [2023-02-18 23:16:58,622 INFO L899 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,623 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,623 INFO L895 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (let ((.cse19 (+ |rec1_#in~i| 1))) (let ((.cse12 (<= 0 |rec1_#t~ret0|)) (.cse4 (<= 0 (+ rec1_~i (- 1)))) (.cse18 (<= .cse19 2147483647))) (let ((.cse6 (<= .cse19 2147483648)) (.cse14 (not .cse18)) (.cse10 (<= 0 (+ |rec1_#t~ret0| (- 1)))) (.cse5 (<= |rec1_#t~ret0| 2147483647)) (.cse7 (<= |rec1_#t~ret0| 1)) (.cse3 (= |rec1_#in~i| rec1_~i)) (.cse11 (<= |rec1_#t~ret0| 0)) (.cse17 (or (and .cse12 .cse4) .cse4)) (.cse13 (<= rec1_~i 2147483646))) (let ((.cse15 (and .cse5 .cse7 .cse18 .cse3 .cse11 .cse17 .cse4 .cse13)) (.cse16 (and .cse5 .cse7 .cse18 .cse3 .cse17 .cse4 .cse10 .cse13)) (.cse0 (or .cse14 (not (<= |rec1_#in~i| (- 1))))) (.cse1 (not .cse6)) (.cse9 (<= rec1_~i 2147483647))) (and .cse0 (let ((.cse2 (<= |rec1_#in~i| 2147483646))) (or .cse1 (not .cse2) (and .cse3 .cse4 (let ((.cse8 (or (and .cse12 .cse4 .cse2 .cse13) (and .cse4 .cse2 .cse13)))) (or (and .cse5 .cse6 .cse7 .cse3 .cse8 .cse9 .cse4 .cse10) (and .cse5 .cse6 .cse7 .cse3 .cse8 .cse11 .cse9 .cse4)))))) .cse14 (or .cse14 .cse15 .cse16) (not (<= |rec1_#in~i| 0)) (or .cse15 .cse16 (and .cse0 .cse14)) (or .cse1 (and (or (and .cse5 .cse6 .cse7 .cse3 .cse11 .cse9 .cse17 .cse4) (and .cse5 .cse6 .cse7 .cse3 .cse9 .cse17 .cse4 .cse10)) .cse3 .cse4))))))) [2023-02-18 23:16:58,623 INFO L899 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,623 INFO L899 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,623 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,623 INFO L899 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L895 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (let ((.cse20 (+ |rec1_#in~i| 1))) (let ((.cse19 (<= .cse20 2147483647)) (.cse11 (<= 0 (+ |rec1_#t~ret0| (- 1)))) (.cse9 (<= |rec1_#t~ret1| 0)) (.cse5 (<= |rec1_#t~ret0| 2147483647)) (.cse13 (<= |rec1_#t~ret0| 0)) (.cse14 (<= 0 |rec1_#t~ret0|)) (.cse15 (<= 0 (+ rec1_~i (- 1))))) (let ((.cse7 (<= |rec1_#t~ret0| 1)) (.cse8 (= |rec1_#in~i| rec1_~i)) (.cse18 (let ((.cse21 (let ((.cse22 (or (and .cse14 .cse15) .cse15))) (or (and .cse5 .cse22) (and .cse5 .cse13 .cse22))))) (or (and .cse9 .cse21 .cse11) (and .cse9 .cse21)))) (.cse16 (<= rec1_~i 2147483646)) (.cse6 (<= .cse20 2147483648)) (.cse1 (not .cse19))) (let ((.cse0 (or .cse1 (not (<= |rec1_#in~i| (- 1))))) (.cse3 (not .cse6)) (.cse17 (<= rec1_~i 2147483647)) (.cse2 (and .cse5 .cse7 .cse19 .cse8 .cse15 .cse18 .cse16))) (and .cse0 (or (and .cse0 .cse1) .cse2) .cse1 (let ((.cse4 (<= |rec1_#in~i| 2147483646))) (or .cse3 (not .cse4) (and .cse5 .cse6 .cse7 .cse8 (let ((.cse10 (let ((.cse12 (or (and .cse14 .cse15 .cse4 .cse16) (and .cse15 .cse4 .cse16)))) (or (and .cse5 .cse12) (and .cse5 .cse12 .cse13))))) (or (and .cse9 .cse10) (and .cse9 .cse10 .cse11))) .cse17 .cse15))) (or .cse3 (and .cse5 .cse6 .cse7 .cse8 .cse17 .cse15 .cse18)) (not (<= |rec1_#in~i| 0)) (or .cse1 .cse2)))))) [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2023-02-18 23:16:58,624 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse8 (+ rec2_~j (- 1))) (.cse7 (<= |rec2_#in~j| 1)) (.cse5 (<= |rec2_#in~j| 2147483647))) (let ((.cse0 (not (<= |rec2_#in~j| 0))) (.cse1 (not .cse5)) (.cse6 (not .cse7)) (.cse2 (<= .cse8 2147483647)) (.cse3 (<= 0 .cse8)) (.cse4 (<= rec2_~j 2147483647))) (and .cse0 (or .cse1 (and .cse2 .cse3 .cse4 .cse5)) (or .cse0 .cse1 .cse6) (or .cse1 .cse6 (and .cse2 .cse3 .cse4 (<= rec2_~j 1) .cse7 .cse5))))) [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L895 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (let ((.cse11 (+ rec2_~j (- 1))) (.cse8 (<= |rec2_#in~j| 2147483647)) (.cse10 (<= |rec2_#in~j| 1))) (let ((.cse0 (not (<= |rec2_#in~j| 0))) (.cse2 (not .cse10)) (.cse1 (not .cse8)) (.cse3 (<= |rec2_#t~ret3| 0)) (.cse4 (<= .cse11 2147483647)) (.cse5 (<= 0 .cse11)) (.cse9 (<= |rec2_#t~ret3| 1)) (.cse6 (<= |rec2_#t~ret3| 2147483647)) (.cse7 (<= rec2_~j 2147483647))) (and .cse0 (or .cse0 .cse1 .cse2) (or .cse1 (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) .cse2 (and .cse3 .cse4 .cse5 .cse9 .cse6 .cse7 (<= rec2_~j 1) .cse10 .cse8)) (or .cse1 (and .cse3 .cse5 .cse7 .cse8) (and .cse4 .cse5 .cse9 .cse6 .cse7 .cse8))))) [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,625 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 23:16:58,626 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-02-18 23:16:58,626 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-18 23:16:58,627 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 26) no Hoare annotation was computed. [2023-02-18 23:16:58,629 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:16:58,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 23:16:58,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 11:16:58 BoogieIcfgContainer [2023-02-18 23:16:58,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 23:16:58,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 23:16:58,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 23:16:58,633 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 23:16:58,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:16:53" (3/4) ... [2023-02-18 23:16:58,635 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 23:16:58,639 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2023-02-18 23:16:58,639 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2023-02-18 23:16:58,641 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-18 23:16:58,641 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-18 23:16:58,641 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 23:16:58,660 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 23:16:58,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 23:16:58,661 INFO L158 Benchmark]: Toolchain (without parser) took 5078.99ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 104.6MB in the beginning and 91.8MB in the end (delta: 12.8MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,661 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:16:58,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 121.69ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.69ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 94.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,661 INFO L158 Benchmark]: Boogie Preprocessor took 15.96ms. Allocated memory is still 151.0MB. Free memory was 94.1MB in the beginning and 93.1MB in the end (delta: 971.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 23:16:58,662 INFO L158 Benchmark]: RCFGBuilder took 246.58ms. Allocated memory is still 151.0MB. Free memory was 93.1MB in the beginning and 83.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,662 INFO L158 Benchmark]: TraceAbstraction took 4646.20ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.7MB in the beginning and 93.9MB in the end (delta: -11.2MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,662 INFO L158 Benchmark]: Witness Printer took 27.92ms. Allocated memory is still 182.5MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 23:16:58,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 121.69ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.69ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 94.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.96ms. Allocated memory is still 151.0MB. Free memory was 94.1MB in the beginning and 93.1MB in the end (delta: 971.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.58ms. Allocated memory is still 151.0MB. Free memory was 93.1MB in the beginning and 83.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4646.20ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.7MB in the beginning and 93.9MB in the end (delta: -11.2MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 27.92ms. Allocated memory is still 182.5MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 20, TraceHistogramMax: 28, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 309 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 2695 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1909 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 853 IncrementalHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 786 mSDtfsCounter, 853 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 1107 SyntacticMatches, 20 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=18, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 91 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 257 PreInvPairs, 279 NumberOfFragments, 1424 HoareAnnotationTreeSize, 257 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1422 NumberOfCodeBlocks, 1422 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2726 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1118 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 29 InterpolantComputations, 17 PerfectInterpolantSequences, 6297/7037 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-18 23:16:58,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE