./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter1.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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 14:01:23,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:01:23,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:01:23,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:01:23,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:01:23,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:01:23,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:01:23,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:01:23,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:01:23,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:01:23,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:01:23,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:01:23,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:01:23,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:01:23,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:01:23,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:01:23,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:01:23,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:01:23,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:01:23,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:01:23,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:01:23,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:01:23,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:01:23,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:01:23,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:01:23,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:01:23,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:01:23,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:01:23,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:01:23,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:01:23,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:01:23,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:01:23,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:01:23,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:01:23,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:01:23,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:01:23,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:01:23,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:01:23,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:01:23,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:01:23,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:01:23,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 14:01:23,673 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:01:23,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:01:23,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:01:23,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:01:23,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 14:01:23,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 14:01:23,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:01:23,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:01:23,675 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:01:23,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:01:23,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:01:23,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:01:23,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:01:23,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 14:01:23,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 14:01:23,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 14:01:23,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 14:01:23,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:01:23,676 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:01:23,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 14:01:23,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:01:23,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:01:23,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 14:01:23,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 14:01:23,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 14:01:23,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 14:01:23,679 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 14:01:23,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 14:01:23,679 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 14:01:23,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-02-15 14:01:23,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:01:23,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:01:23,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:01:23,833 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:01:23,833 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:01:23,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 14:01:24,767 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:01:24,947 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:01:24,948 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 14:01:24,951 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c156ce0d/1323c5b9f7ce42f4b38ec458810734cb/FLAGe7826b9ac [2023-02-15 14:01:24,965 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c156ce0d/1323c5b9f7ce42f4b38ec458810734cb [2023-02-15 14:01:24,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:01:24,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:01:24,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:01:24,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:01:24,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:01:24,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:01:24" (1/1) ... [2023-02-15 14:01:24,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14023333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:24, skipping insertion in model container [2023-02-15 14:01:24,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:01:24" (1/1) ... [2023-02-15 14:01:24,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:01:24,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:01:25,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:01:25,093 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:01:25,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:01:25,107 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:01:25,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25 WrapperNode [2023-02-15 14:01:25,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:01:25,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:01:25,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:01:25,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:01:25,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,125 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-02-15 14:01:25,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:01:25,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:01:25,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:01:25,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:01:25,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,135 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:01:25,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:01:25,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:01:25,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:01:25,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (1/1) ... [2023-02-15 14:01:25,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 14:01:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:25,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 14:01:25,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 14:01:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-15 14:01:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-15 14:01:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:01:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:01:25,228 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:01:25,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:01:25,305 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:01:25,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:01:25,310 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 14:01:25,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:01:25 BoogieIcfgContainer [2023-02-15 14:01:25,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:01:25,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 14:01:25,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 14:01:25,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 14:01:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:01:24" (1/3) ... [2023-02-15 14:01:25,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e141abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:01:25, skipping insertion in model container [2023-02-15 14:01:25,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:01:25" (2/3) ... [2023-02-15 14:01:25,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e141abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:01:25, skipping insertion in model container [2023-02-15 14:01:25,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:01:25" (3/3) ... [2023-02-15 14:01:25,316 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-02-15 14:01:25,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 14:01:25,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 14:01:25,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 14:01:25,360 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;@b041e17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 14:01:25,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 14:01:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 14:01:25,368 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:25,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:25,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2023-02-15 14:01:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:25,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333217135] [2023-02-15 14:01:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333217135] [2023-02-15 14:01:25,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333217135] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:25,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:25,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 14:01:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994503664] [2023-02-15 14:01:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 14:01:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:25,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 14:01:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 14:01:25,596 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 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) [2023-02-15 14:01:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:25,676 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-15 14:01:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 14:01:25,678 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 [2023-02-15 14:01:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:25,682 INFO L225 Difference]: With dead ends: 65 [2023-02-15 14:01:25,682 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 14:01:25,684 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 [2023-02-15 14:01:25,686 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 14:01:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 14:01:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-15 14:01:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-15 14:01:25,711 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-15 14:01:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:25,711 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-15 14:01:25,712 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) [2023-02-15 14:01:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-15 14:01:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 14:01:25,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:25,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:25,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 14:01:25,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2023-02-15 14:01:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:25,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634761161] [2023-02-15 14:01:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:25,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:25,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634761161] [2023-02-15 14:01:25,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634761161] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:25,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:25,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 14:01:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214294813] [2023-02-15 14:01:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 14:01:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 14:01:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 14:01:25,779 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:25,802 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 14:01:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 14:01:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 14:01:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:25,804 INFO L225 Difference]: With dead ends: 34 [2023-02-15 14:01:25,804 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 14:01:25,804 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 [2023-02-15 14:01:25,805 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:25,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 14:01:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 14:01:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-15 14:01:25,811 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-15 14:01:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:25,811 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-15 14:01:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-15 14:01:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 14:01:25,812 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:25,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 14:01:25,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -114082075, now seen corresponding path program 1 times [2023-02-15 14:01:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:25,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869686737] [2023-02-15 14:01:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869686737] [2023-02-15 14:01:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869686737] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865013464] [2023-02-15 14:01:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:25,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:25,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 14:01:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:25,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:01:25,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:25,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:26,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865013464] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:26,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:26,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 14:01:26,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463793879] [2023-02-15 14:01:26,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 14:01:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 14:01:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 14:01:26,021 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:26,137 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-15 14:01:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 14:01:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 14:01:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:26,140 INFO L225 Difference]: With dead ends: 39 [2023-02-15 14:01:26,141 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 14:01:26,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-15 14:01:26,143 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:26,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 75 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 14:01:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-15 14:01:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-15 14:01:26,154 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-15 14:01:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:26,155 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-15 14:01:26,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-15 14:01:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 14:01:26,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:26,158 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:26,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 14:01:26,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:26,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2023-02-15 14:01:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:26,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520681541] [2023-02-15 14:01:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 14:01:26,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:26,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520681541] [2023-02-15 14:01:26,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520681541] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:26,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:26,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 14:01:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568870131] [2023-02-15 14:01:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 14:01:26,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 14:01:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 14:01:26,423 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:26,428 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 14:01:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 14:01:26,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 14:01:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:26,429 INFO L225 Difference]: With dead ends: 34 [2023-02-15 14:01:26,429 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 14:01:26,430 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 [2023-02-15 14:01:26,431 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:26,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 14:01:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-15 14:01:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-15 14:01:26,448 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-15 14:01:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:26,448 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-15 14:01:26,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-15 14:01:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 14:01:26,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:26,450 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 14:01:26,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2023-02-15 14:01:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:26,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538534452] [2023-02-15 14:01:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 14:01:26,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538534452] [2023-02-15 14:01:26,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538534452] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:26,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:26,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 14:01:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125879559] [2023-02-15 14:01:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 14:01:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 14:01:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 14:01:26,538 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:26,552 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 14:01:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 14:01:26,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 14:01:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:26,557 INFO L225 Difference]: With dead ends: 31 [2023-02-15 14:01:26,557 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 14:01:26,558 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 [2023-02-15 14:01:26,559 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 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 [2023-02-15 14:01:26,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 14:01:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 14:01:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 14:01:26,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-15 14:01:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:26,579 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 14:01:26,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 14:01:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 14:01:26,581 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:26,581 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 14:01:26,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2023-02-15 14:01:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:26,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280060051] [2023-02-15 14:01:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 14:01:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:26,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280060051] [2023-02-15 14:01:26,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280060051] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:26,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:26,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 14:01:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837556251] [2023-02-15 14:01:26,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 14:01:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 14:01:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 14:01:26,651 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:26,679 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-15 14:01:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 14:01:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 14:01:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:26,680 INFO L225 Difference]: With dead ends: 44 [2023-02-15 14:01:26,681 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 14:01:26,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 14:01:26,682 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:26,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 14:01:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-15 14:01:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 14:01:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-15 14:01:26,692 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-15 14:01:26,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:26,692 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-15 14:01:26,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,693 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-15 14:01:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 14:01:26,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:26,693 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 14:01:26,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 468589560, now seen corresponding path program 1 times [2023-02-15 14:01:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:26,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706611092] [2023-02-15 14:01:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 14:01:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706611092] [2023-02-15 14:01:26,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706611092] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:26,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:01:26,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 14:01:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248589425] [2023-02-15 14:01:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 14:01:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 14:01:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 14:01:26,788 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:26,814 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 14:01:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 14:01:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 14:01:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:26,815 INFO L225 Difference]: With dead ends: 60 [2023-02-15 14:01:26,815 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 14:01:26,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 14:01:26,816 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:26,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 14:01:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 14:01:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 14:01:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 14:01:26,837 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-15 14:01:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:26,838 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 14:01:26,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 14:01:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 14:01:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 14:01:26,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:26,839 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:26,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 14:01:26,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2023-02-15 14:01:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:26,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333166393] [2023-02-15 14:01:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 14:01:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333166393] [2023-02-15 14:01:27,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333166393] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:27,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974886141] [2023-02-15 14:01:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:27,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:27,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 14:01:27,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 14:01:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 14:01:27,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 14:01:27,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974886141] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:01:27,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 14:01:27,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-15 14:01:27,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327056049] [2023-02-15 14:01:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:01:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 14:01:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 14:01:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-15 14:01:27,121 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 14:01:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:27,146 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-15 14:01:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 14:01:27,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-02-15 14:01:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:27,147 INFO L225 Difference]: With dead ends: 38 [2023-02-15 14:01:27,147 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 14:01:27,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-15 14:01:27,148 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:27,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:01:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 14:01:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 14:01:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 14:01:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-15 14:01:27,152 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-15 14:01:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:27,152 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-15 14:01:27,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 14:01:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-15 14:01:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 14:01:27,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:27,153 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:27,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:27,370 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,SelfDestructingSolverStorable7 [2023-02-15 14:01:27,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 255701234, now seen corresponding path program 1 times [2023-02-15 14:01:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615414488] [2023-02-15 14:01:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 14:01:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:27,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615414488] [2023-02-15 14:01:27,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615414488] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:27,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126440484] [2023-02-15 14:01:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:27,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:27,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:27,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:27,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 14:01:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:27,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 14:01:27,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 14:01:27,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 14:01:27,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126440484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:27,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:27,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-02-15 14:01:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767728912] [2023-02-15 14:01:27,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:27,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 14:01:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 14:01:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-15 14:01:27,712 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:01:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:27,920 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-02-15 14:01:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 14:01:27,920 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2023-02-15 14:01:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:27,921 INFO L225 Difference]: With dead ends: 128 [2023-02-15 14:01:27,921 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 14:01:27,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-02-15 14:01:27,922 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 139 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 14:01:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 14:01:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-02-15 14:01:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 14:01:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-02-15 14:01:27,931 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-02-15 14:01:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:27,931 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-02-15 14:01:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:01:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-02-15 14:01:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-15 14:01:27,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:27,933 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:27,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:28,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:28,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1292177225, now seen corresponding path program 2 times [2023-02-15 14:01:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:28,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510594952] [2023-02-15 14:01:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-15 14:01:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510594952] [2023-02-15 14:01:28,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510594952] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723574334] [2023-02-15 14:01:28,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 14:01:28,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:28,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:28,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 14:01:28,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 14:01:28,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:28,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 14:01:28,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-15 14:01:28,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-15 14:01:29,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723574334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:29,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:29,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 21 [2023-02-15 14:01:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451564843] [2023-02-15 14:01:29,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 14:01:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 14:01:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-02-15 14:01:29,276 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 14:01:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:29,487 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-02-15 14:01:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 14:01:29,487 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2023-02-15 14:01:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:29,488 INFO L225 Difference]: With dead ends: 145 [2023-02-15 14:01:29,488 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 14:01:29,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 153 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 14:01:29,492 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:29,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 14:01:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 14:01:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-15 14:01:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 14:01:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-02-15 14:01:29,513 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 82 [2023-02-15 14:01:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:29,514 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-02-15 14:01:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 14:01:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-02-15 14:01:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-15 14:01:29,518 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:29,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:29,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 14:01:29,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:29,723 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:29,724 INFO L85 PathProgramCache]: Analyzing trace with hash -375510631, now seen corresponding path program 3 times [2023-02-15 14:01:29,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:29,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580374808] [2023-02-15 14:01:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:29,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:01:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-15 14:01:30,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:30,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580374808] [2023-02-15 14:01:30,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580374808] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:30,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435424950] [2023-02-15 14:01:30,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 14:01:30,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:30,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:30,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 14:01:30,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 14:01:30,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:30,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 14:01:30,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-15 14:01:30,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-15 14:01:30,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435424950] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:30,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:30,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-02-15 14:01:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175426055] [2023-02-15 14:01:30,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 14:01:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 14:01:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-02-15 14:01:30,325 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 14:01:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:30,618 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-02-15 14:01:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 14:01:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2023-02-15 14:01:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:30,620 INFO L225 Difference]: With dead ends: 154 [2023-02-15 14:01:30,620 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 14:01:30,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 14:01:30,622 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:30,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 162 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 14:01:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 14:01:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-02-15 14:01:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 117 states have internal predecessors, (130), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 14:01:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-15 14:01:30,630 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 98 [2023-02-15 14:01:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:30,631 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-15 14:01:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 14:01:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-15 14:01:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-02-15 14:01:30,632 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:30,632 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:30,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 14:01:30,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1162975598, now seen corresponding path program 4 times [2023-02-15 14:01:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:30,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712087641] [2023-02-15 14:01:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:01:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-02-15 14:01:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712087641] [2023-02-15 14:01:31,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712087641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482962442] [2023-02-15 14:01:31,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 14:01:31,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:31,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:31,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 14:01:31,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 14:01:31,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:31,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 14:01:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-02-15 14:01:31,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-02-15 14:01:32,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482962442] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:32,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:32,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2023-02-15 14:01:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206515525] [2023-02-15 14:01:32,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:32,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 14:01:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 14:01:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 14:01:32,558 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 14:01:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:32,756 INFO L93 Difference]: Finished difference Result 656 states and 740 transitions. [2023-02-15 14:01:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-15 14:01:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2023-02-15 14:01:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:32,760 INFO L225 Difference]: With dead ends: 656 [2023-02-15 14:01:32,760 INFO L226 Difference]: Without dead ends: 480 [2023-02-15 14:01:32,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 14:01:32,762 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:32,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 218 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 14:01:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-15 14:01:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 232. [2023-02-15 14:01:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 215 states have (on average 1.0930232558139534) internal successors, (235), 215 states have internal predecessors, (235), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 14:01:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2023-02-15 14:01:32,780 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 133 [2023-02-15 14:01:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:32,781 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2023-02-15 14:01:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 14:01:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2023-02-15 14:01:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-02-15 14:01:32,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:32,783 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:32,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:32,997 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1114086214, now seen corresponding path program 5 times [2023-02-15 14:01:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:32,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873733090] [2023-02-15 14:01:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1761 proven. 51 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2023-02-15 14:01:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:33,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873733090] [2023-02-15 14:01:33,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873733090] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:33,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393746107] [2023-02-15 14:01:33,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 14:01:33,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:33,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:33,978 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:33,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 14:01:34,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 14:01:34,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:34,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 14:01:34,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1323 proven. 88 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 14:01:34,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1341 proven. 70 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 14:01:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393746107] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:35,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:35,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2023-02-15 14:01:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159414341] [2023-02-15 14:01:35,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 14:01:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 14:01:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-02-15 14:01:35,169 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 14:01:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:35,544 INFO L93 Difference]: Finished difference Result 496 states and 546 transitions. [2023-02-15 14:01:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 14:01:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 263 [2023-02-15 14:01:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:35,545 INFO L225 Difference]: With dead ends: 496 [2023-02-15 14:01:35,545 INFO L226 Difference]: Without dead ends: 303 [2023-02-15 14:01:35,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 532 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 14:01:35,547 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:35,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 253 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 14:01:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-15 14:01:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 290. [2023-02-15 14:01:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 270 states have (on average 1.0777777777777777) internal successors, (291), 270 states have internal predecessors, (291), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-15 14:01:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 311 transitions. [2023-02-15 14:01:35,560 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 311 transitions. Word has length 263 [2023-02-15 14:01:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:35,561 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 311 transitions. [2023-02-15 14:01:35,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 14:01:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 311 transitions. [2023-02-15 14:01:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-02-15 14:01:35,563 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:35,563 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:35,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:35,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1879986663, now seen corresponding path program 6 times [2023-02-15 14:01:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:35,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490905509] [2023-02-15 14:01:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:01:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1956 proven. 90 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2023-02-15 14:01:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490905509] [2023-02-15 14:01:36,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490905509] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821282787] [2023-02-15 14:01:36,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 14:01:36,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:36,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:36,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 14:01:36,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-02-15 14:01:36,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:36,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 14:01:36,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-02-15 14:01:36,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-02-15 14:01:37,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821282787] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:37,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:37,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2023-02-15 14:01:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170139730] [2023-02-15 14:01:37,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-15 14:01:37,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-15 14:01:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 14:01:37,535 INFO L87 Difference]: Start difference. First operand 290 states and 311 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:01:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:39,302 INFO L93 Difference]: Finished difference Result 1234 states and 1405 transitions. [2023-02-15 14:01:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 14:01:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 294 [2023-02-15 14:01:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:39,306 INFO L225 Difference]: With dead ends: 1234 [2023-02-15 14:01:39,306 INFO L226 Difference]: Without dead ends: 984 [2023-02-15 14:01:39,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2023-02-15 14:01:39,311 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 465 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:39,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 356 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 14:01:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-02-15 14:01:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 382. [2023-02-15 14:01:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 359 states have (on average 1.0807799442896935) internal successors, (388), 359 states have internal predecessors, (388), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-02-15 14:01:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 411 transitions. [2023-02-15 14:01:39,335 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 411 transitions. Word has length 294 [2023-02-15 14:01:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:39,336 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 411 transitions. [2023-02-15 14:01:39,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:01:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 411 transitions. [2023-02-15 14:01:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-02-15 14:01:39,339 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:39,339 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:39,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 14:01:39,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 14:01:39,544 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 306220470, now seen corresponding path program 7 times [2023-02-15 14:01:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:39,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826844572] [2023-02-15 14:01:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3720 proven. 138 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-02-15 14:01:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826844572] [2023-02-15 14:01:40,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826844572] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494699981] [2023-02-15 14:01:40,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 14:01:40,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:40,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:40,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:40,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 14:01:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:40,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 14:01:40,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2023-02-15 14:01:41,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2023-02-15 14:01:45,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494699981] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:45,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:45,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-02-15 14:01:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125020479] [2023-02-15 14:01:45,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:45,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-15 14:01:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-15 14:01:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 14:01:45,105 INFO L87 Difference]: Start difference. First operand 382 states and 411 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 14:01:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:45,976 INFO L93 Difference]: Finished difference Result 791 states and 853 transitions. [2023-02-15 14:01:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-02-15 14:01:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 323 [2023-02-15 14:01:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:45,978 INFO L225 Difference]: With dead ends: 791 [2023-02-15 14:01:45,978 INFO L226 Difference]: Without dead ends: 523 [2023-02-15 14:01:45,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 625 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 14:01:45,997 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 68 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:45,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 351 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 14:01:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-02-15 14:01:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 471. [2023-02-15 14:01:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 444 states have (on average 1.0698198198198199) internal successors, (475), 444 states have internal predecessors, (475), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2023-02-15 14:01:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 502 transitions. [2023-02-15 14:01:46,036 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 502 transitions. Word has length 323 [2023-02-15 14:01:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:46,037 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 502 transitions. [2023-02-15 14:01:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-15 14:01:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 502 transitions. [2023-02-15 14:01:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-02-15 14:01:46,040 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:46,040 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:46,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 14:01:46,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 14:01:46,246 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 911331609, now seen corresponding path program 8 times [2023-02-15 14:01:46,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:46,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518749986] [2023-02-15 14:01:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:01:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4322 proven. 195 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-02-15 14:01:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:47,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518749986] [2023-02-15 14:01:47,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518749986] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:47,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449281175] [2023-02-15 14:01:47,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 14:01:47,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:47,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:47,542 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:47,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 14:01:47,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 14:01:47,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:47,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 14:01:47,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 14:01:48,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 14:01:52,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449281175] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:52,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:52,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2023-02-15 14:01:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433934531] [2023-02-15 14:01:52,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 14:01:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 14:01:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 14:01:52,338 INFO L87 Difference]: Start difference. First operand 471 states and 502 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 14:01:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:53,846 INFO L93 Difference]: Finished difference Result 962 states and 1025 transitions. [2023-02-15 14:01:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 14:01:53,847 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 348 [2023-02-15 14:01:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:53,849 INFO L225 Difference]: With dead ends: 962 [2023-02-15 14:01:53,849 INFO L226 Difference]: Without dead ends: 670 [2023-02-15 14:01:53,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 667 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2023-02-15 14:01:53,853 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:53,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 422 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 14:01:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-02-15 14:01:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 590. [2023-02-15 14:01:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 558 states have (on average 1.060931899641577) internal successors, (592), 558 states have internal predecessors, (592), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2023-02-15 14:01:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 624 transitions. [2023-02-15 14:01:53,895 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 624 transitions. Word has length 348 [2023-02-15 14:01:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:53,895 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 624 transitions. [2023-02-15 14:01:53,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 14:01:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 624 transitions. [2023-02-15 14:01:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-15 14:01:53,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:53,899 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:53,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-15 14:01:54,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 14:01:54,105 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1035217017, now seen corresponding path program 9 times [2023-02-15 14:01:54,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:54,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072090590] [2023-02-15 14:01:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:54,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:01:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 4857 proven. 267 refuted. 0 times theorem prover too weak. 3403 trivial. 0 not checked. [2023-02-15 14:01:55,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:55,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072090590] [2023-02-15 14:01:55,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072090590] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:55,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192101728] [2023-02-15 14:01:55,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 14:01:55,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:55,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:55,566 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:55,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 14:01:55,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-15 14:01:55,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 14:01:55,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2023-02-15 14:01:56,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2023-02-15 14:01:56,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192101728] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:56,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:56,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2023-02-15 14:01:56,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700930663] [2023-02-15 14:01:56,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:56,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-02-15 14:01:56,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-02-15 14:01:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=4555, Unknown=0, NotChecked=0, Total=5256 [2023-02-15 14:01:56,703 INFO L87 Difference]: Start difference. First operand 590 states and 624 transitions. Second operand has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 14:01:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:58,179 INFO L93 Difference]: Finished difference Result 1758 states and 1973 transitions. [2023-02-15 14:01:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-02-15 14:01:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 360 [2023-02-15 14:01:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:58,186 INFO L225 Difference]: With dead ends: 1758 [2023-02-15 14:01:58,200 INFO L226 Difference]: Without dead ends: 1438 [2023-02-15 14:01:58,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4633 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3170, Invalid=16570, Unknown=0, NotChecked=0, Total=19740 [2023-02-15 14:01:58,207 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 663 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:58,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 584 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 14:01:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-02-15 14:01:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 805. [2023-02-15 14:01:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 767 states have (on average 1.0625814863102998) internal successors, (815), 767 states have internal predecessors, (815), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2023-02-15 14:01:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 853 transitions. [2023-02-15 14:01:58,305 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 853 transitions. Word has length 360 [2023-02-15 14:01:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:58,306 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 853 transitions. [2023-02-15 14:01:58,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 14:01:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 853 transitions. [2023-02-15 14:01:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-02-15 14:01:58,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:58,310 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:01:58,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 14:01:58,516 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:01:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash 573081926, now seen corresponding path program 10 times [2023-02-15 14:01:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:58,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464136087] [2023-02-15 14:01:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:01:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:01:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 6995 proven. 336 refuted. 0 times theorem prover too weak. 4073 trivial. 0 not checked. [2023-02-15 14:02:00,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:02:00,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464136087] [2023-02-15 14:02:00,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464136087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:02:00,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506564301] [2023-02-15 14:02:00,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 14:02:00,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:02:00,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:02:00,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 14:02:00,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 14:02:00,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:02:00,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 14:02:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:02:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2726 trivial. 0 not checked. [2023-02-15 14:02:00,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:02:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2726 trivial. 0 not checked. [2023-02-15 14:02:07,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506564301] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:02:07,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:02:07,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2023-02-15 14:02:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653978097] [2023-02-15 14:02:07,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:02:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-15 14:02:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:02:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-15 14:02:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 14:02:07,561 INFO L87 Difference]: Start difference. First operand 805 states and 853 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 14:02:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:02:10,238 INFO L93 Difference]: Finished difference Result 1556 states and 1644 transitions. [2023-02-15 14:02:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-02-15 14:02:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 389 [2023-02-15 14:02:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:02:10,270 INFO L225 Difference]: With dead ends: 1556 [2023-02-15 14:02:10,271 INFO L226 Difference]: Without dead ends: 1156 [2023-02-15 14:02:10,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 733 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2023-02-15 14:02:10,276 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 105 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 14:02:10,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 618 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 14:02:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-02-15 14:02:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1002. [2023-02-15 14:02:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 957 states have (on average 1.0553814002089865) internal successors, (1010), 957 states have internal predecessors, (1010), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2023-02-15 14:02:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1055 transitions. [2023-02-15 14:02:10,354 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1055 transitions. Word has length 389 [2023-02-15 14:02:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:02:10,354 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1055 transitions. [2023-02-15 14:02:10,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 14:02:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1055 transitions. [2023-02-15 14:02:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-02-15 14:02:10,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:02:10,363 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:02:10,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 14:02:10,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 14:02:10,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:02:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:02:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1070434506, now seen corresponding path program 11 times [2023-02-15 14:02:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:02:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655683804] [2023-02-15 14:02:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:02:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:02:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:02:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 6823 proven. 420 refuted. 0 times theorem prover too weak. 4670 trivial. 0 not checked. [2023-02-15 14:02:11,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:02:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655683804] [2023-02-15 14:02:11,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655683804] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:02:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615250629] [2023-02-15 14:02:11,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 14:02:11,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:11,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:02:11,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:02:11,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 14:02:12,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-15 14:02:12,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:02:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 14:02:12,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:02:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8269 proven. 1615 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-02-15 14:02:13,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:02:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8455 proven. 1429 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-02-15 14:02:17,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615250629] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:02:17,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:02:17,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2023-02-15 14:02:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089308046] [2023-02-15 14:02:17,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:02:17,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-15 14:02:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:02:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-15 14:02:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2023-02-15 14:02:17,206 INFO L87 Difference]: Start difference. First operand 1002 states and 1055 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 14:02:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:02:20,951 INFO L93 Difference]: Finished difference Result 1874 states and 1967 transitions. [2023-02-15 14:02:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-02-15 14:02:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 395 [2023-02-15 14:02:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:02:20,955 INFO L225 Difference]: With dead ends: 1874 [2023-02-15 14:02:20,955 INFO L226 Difference]: Without dead ends: 1450 [2023-02-15 14:02:20,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 747 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2023-02-15 14:02:20,959 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:02:20,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 590 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4111 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 14:02:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-02-15 14:02:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1250. [2023-02-15 14:02:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1197 states have (on average 1.050125313283208) internal successors, (1257), 1197 states have internal predecessors, (1257), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2023-02-15 14:02:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1310 transitions. [2023-02-15 14:02:21,062 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1310 transitions. Word has length 395 [2023-02-15 14:02:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:02:21,063 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1310 transitions. [2023-02-15 14:02:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 14:02:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1310 transitions. [2023-02-15 14:02:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-02-15 14:02:21,067 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:02:21,067 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 14:02:21,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 14:02:21,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:21,274 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:02:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:02:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash 183146630, now seen corresponding path program 12 times [2023-02-15 14:02:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:02:21,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874747934] [2023-02-15 14:02:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:02:21,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:02:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:02:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:22,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 9020 proven. 1914 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2023-02-15 14:02:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:02:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874747934] [2023-02-15 14:02:24,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874747934] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:02:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056384903] [2023-02-15 14:02:24,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 14:02:24,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:24,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:02:24,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:02:24,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 14:02:24,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-15 14:02:24,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:02:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 14:02:24,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:02:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-02-15 14:02:25,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:02:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-02-15 14:02:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056384903] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:02:31,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:02:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2023-02-15 14:02:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347864907] [2023-02-15 14:02:31,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:02:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-02-15 14:02:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:02:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-02-15 14:02:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2023-02-15 14:02:31,271 INFO L87 Difference]: Start difference. First operand 1250 states and 1310 transitions. Second operand has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 14:02:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:02:51,463 INFO L93 Difference]: Finished difference Result 4282 states and 4549 transitions. [2023-02-15 14:02:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-02-15 14:02:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 411 [2023-02-15 14:02:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:02:51,474 INFO L225 Difference]: With dead ends: 4282 [2023-02-15 14:02:51,474 INFO L226 Difference]: Without dead ends: 3484 [2023-02-15 14:02:51,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2023-02-15 14:02:51,508 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1441 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 14:02:51,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1209 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 14:02:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2023-02-15 14:02:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2786. [2023-02-15 14:02:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2677 states have (on average 1.0429585356742623) internal successors, (2792), 2677 states have internal predecessors, (2792), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2023-02-15 14:02:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 2901 transitions. [2023-02-15 14:02:51,762 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 2901 transitions. Word has length 411 [2023-02-15 14:02:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:02:51,763 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 2901 transitions. [2023-02-15 14:02:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 14:02:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 2901 transitions. [2023-02-15 14:02:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2023-02-15 14:02:51,859 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:02:51,860 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-15 14:02:51,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 14:02:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:52,060 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:02:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:02:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash -207241758, now seen corresponding path program 13 times [2023-02-15 14:02:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:02:52,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771810325] [2023-02-15 14:02:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:02:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:02:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:02:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:02:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1222 proven. 6 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 14:02:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:02:59,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771810325] [2023-02-15 14:02:59,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771810325] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:02:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743844074] [2023-02-15 14:02:59,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 14:02:59,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:02:59,185 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:02:59,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 14:02:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:59,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 14:02:59,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:02:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 14:02:59,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:03:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 14:03:00,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743844074] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:03:00,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:03:00,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2023-02-15 14:03:00,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161905245] [2023-02-15 14:03:00,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:03:00,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 14:03:00,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:03:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 14:03:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 14:03:00,942 INFO L87 Difference]: Start difference. First operand 2786 states and 2901 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 14:03:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:03:01,201 INFO L93 Difference]: Finished difference Result 4071 states and 4238 transitions. [2023-02-15 14:03:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 14:03:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 861 [2023-02-15 14:03:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:03:01,206 INFO L225 Difference]: With dead ends: 4071 [2023-02-15 14:03:01,206 INFO L226 Difference]: Without dead ends: 2037 [2023-02-15 14:03:01,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1797 GetRequests, 1773 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-02-15 14:03:01,210 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:03:01,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:03:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-02-15 14:03:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-02-15 14:03:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1959 states have (on average 1.0423685553854007) internal successors, (2042), 1959 states have internal predecessors, (2042), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2023-02-15 14:03:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2120 transitions. [2023-02-15 14:03:01,377 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2120 transitions. Word has length 861 [2023-02-15 14:03:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:03:01,377 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2120 transitions. [2023-02-15 14:03:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 14:03:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2120 transitions. [2023-02-15 14:03:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2023-02-15 14:03:01,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:03:01,385 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-02-15 14:03:01,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 14:03:01,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:03:01,594 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:03:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:03:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1413464359, now seen corresponding path program 14 times [2023-02-15 14:03:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:03:01,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731110113] [2023-02-15 14:03:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:03:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:03:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:03:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2785 proven. 30 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 14:03:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:03:09,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731110113] [2023-02-15 14:03:09,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731110113] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:03:09,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603742982] [2023-02-15 14:03:09,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 14:03:09,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:03:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:03:09,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:03:09,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 14:03:10,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 14:03:10,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:03:10,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 14:03:10,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:03:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 14:03:10,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:03:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 14:03:12,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603742982] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:03:12,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:03:12,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2023-02-15 14:03:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982689806] [2023-02-15 14:03:12,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:03:12,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 14:03:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:03:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 14:03:12,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-02-15 14:03:12,650 INFO L87 Difference]: Start difference. First operand 2037 states and 2120 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:03:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:03:12,837 INFO L93 Difference]: Finished difference Result 2624 states and 2730 transitions. [2023-02-15 14:03:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 14:03:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 878 [2023-02-15 14:03:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:03:12,840 INFO L225 Difference]: With dead ends: 2624 [2023-02-15 14:03:12,840 INFO L226 Difference]: Without dead ends: 1339 [2023-02-15 14:03:12,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1843 GetRequests, 1804 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-02-15 14:03:12,843 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 14:03:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 125 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 14:03:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-02-15 14:03:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-02-15 14:03:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1290 states have (on average 1.0410852713178294) internal successors, (1343), 1290 states have internal predecessors, (1343), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2023-02-15 14:03:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1392 transitions. [2023-02-15 14:03:12,997 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1392 transitions. Word has length 878 [2023-02-15 14:03:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:03:12,997 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1392 transitions. [2023-02-15 14:03:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:03:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1392 transitions. [2023-02-15 14:03:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2023-02-15 14:03:13,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:03:13,004 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 14:03:13,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 14:03:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 14:03:13,213 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:03:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:03:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1429737837, now seen corresponding path program 15 times [2023-02-15 14:03:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:03:13,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643579331] [2023-02-15 14:03:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:03:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:03:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:03:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 23418 proven. 615 refuted. 0 times theorem prover too weak. 47589 trivial. 0 not checked. [2023-02-15 14:03:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:03:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643579331] [2023-02-15 14:03:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643579331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:03:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282842900] [2023-02-15 14:03:18,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 14:03:18,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:03:18,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:03:18,316 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:03:18,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 14:03:18,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-02-15 14:03:18,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:03:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 14:03:18,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:03:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 17053 proven. 836 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2023-02-15 14:03:19,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:03:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 17053 proven. 836 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2023-02-15 14:03:20,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282842900] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:03:20,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:03:20,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2023-02-15 14:03:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945575906] [2023-02-15 14:03:20,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:03:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-02-15 14:03:20,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:03:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-02-15 14:03:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2023-02-15 14:03:20,689 INFO L87 Difference]: Start difference. First operand 1339 states and 1392 transitions. Second operand has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:03:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:03:26,538 INFO L93 Difference]: Finished difference Result 5350 states and 5985 transitions. [2023-02-15 14:03:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-15 14:03:26,538 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 898 [2023-02-15 14:03:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:03:26,549 INFO L225 Difference]: With dead ends: 5350 [2023-02-15 14:03:26,549 INFO L226 Difference]: Without dead ends: 4464 [2023-02-15 14:03:26,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 1792 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2023-02-15 14:03:26,561 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1299 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 14:03:26,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 777 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 14:03:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2023-02-15 14:03:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 1905. [2023-02-15 14:03:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1848 states have (on average 1.0443722943722944) internal successors, (1930), 1848 states have internal predecessors, (1930), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2023-02-15 14:03:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 1987 transitions. [2023-02-15 14:03:26,750 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 1987 transitions. Word has length 898 [2023-02-15 14:03:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:03:26,751 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 1987 transitions. [2023-02-15 14:03:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 14:03:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 1987 transitions. [2023-02-15 14:03:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-02-15 14:03:26,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:03:26,760 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 14:03:26,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 14:03:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:03:26,967 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:03:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:03:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 994792221, now seen corresponding path program 16 times [2023-02-15 14:03:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:03:26,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460151537] [2023-02-15 14:03:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:03:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:03:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:03:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:03:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:03:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 40116 proven. 726 refuted. 0 times theorem prover too weak. 48198 trivial. 0 not checked. [2023-02-15 14:03:33,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:03:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460151537] [2023-02-15 14:03:33,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460151537] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:03:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923911893] [2023-02-15 14:03:33,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 14:03:33,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:03:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:03:33,798 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:03:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 14:03:34,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 14:03:34,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:03:34,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-15 14:03:34,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:03:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 51668 proven. 3265 refuted. 0 times theorem prover too weak. 34107 trivial. 0 not checked. [2023-02-15 14:03:35,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:03:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 51668 proven. 3265 refuted. 0 times theorem prover too weak. 34107 trivial. 0 not checked. [2023-02-15 14:03:58,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923911893] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:03:58,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:03:58,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-02-15 14:03:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673499646] [2023-02-15 14:03:58,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:03:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-15 14:03:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:03:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-15 14:03:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-02-15 14:03:58,124 INFO L87 Difference]: Start difference. First operand 1905 states and 1987 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 14:04:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:04:04,547 INFO L93 Difference]: Finished difference Result 3781 states and 3946 transitions. [2023-02-15 14:04:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-02-15 14:04:04,547 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 966 [2023-02-15 14:04:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:04:04,553 INFO L225 Difference]: With dead ends: 3781 [2023-02-15 14:04:04,553 INFO L226 Difference]: Without dead ends: 2620 [2023-02-15 14:04:04,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2239 GetRequests, 1877 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33434 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-02-15 14:04:04,566 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 162 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 14:04:04,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 706 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 14:04:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-02-15 14:04:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2314. [2023-02-15 14:04:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2241 states have (on average 1.039714413208389) internal successors, (2330), 2241 states have internal predecessors, (2330), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2023-02-15 14:04:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2403 transitions. [2023-02-15 14:04:04,851 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2403 transitions. Word has length 966 [2023-02-15 14:04:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:04:04,852 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 2403 transitions. [2023-02-15 14:04:04,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 14:04:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2403 transitions. [2023-02-15 14:04:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2023-02-15 14:04:04,861 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:04:04,861 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 14:04:04,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 14:04:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:04:05,071 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:04:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:04:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -890451406, now seen corresponding path program 17 times [2023-02-15 14:04:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:04:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845204981] [2023-02-15 14:04:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:04:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:04:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:04:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 42979 proven. 846 refuted. 0 times theorem prover too weak. 52052 trivial. 0 not checked. [2023-02-15 14:04:12,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:04:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845204981] [2023-02-15 14:04:12,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845204981] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:04:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061980020] [2023-02-15 14:04:12,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 14:04:12,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:04:12,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:04:12,239 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:04:12,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 14:04:13,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-02-15 14:04:13,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:04:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 14:04:13,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:04:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 58882 proven. 4643 refuted. 0 times theorem prover too weak. 32352 trivial. 0 not checked. [2023-02-15 14:04:14,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:04:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 59738 proven. 3787 refuted. 0 times theorem prover too weak. 32352 trivial. 0 not checked. [2023-02-15 14:04:29,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061980020] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:04:29,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:04:29,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 66, 66] total 95 [2023-02-15 14:04:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987091656] [2023-02-15 14:04:29,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:04:29,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-02-15 14:04:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:04:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-02-15 14:04:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=8068, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 14:04:29,308 INFO L87 Difference]: Start difference. First operand 2314 states and 2403 transitions. Second operand has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 14:04:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:04:35,383 INFO L93 Difference]: Finished difference Result 4115 states and 4273 transitions. [2023-02-15 14:04:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-02-15 14:04:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 1003 [2023-02-15 14:04:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:04:35,391 INFO L225 Difference]: With dead ends: 4115 [2023-02-15 14:04:35,391 INFO L226 Difference]: Without dead ends: 3124 [2023-02-15 14:04:35,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2326 GetRequests, 1962 SyntacticMatches, 57 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32811 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=12888, Invalid=82284, Unknown=0, NotChecked=0, Total=95172 [2023-02-15 14:04:35,399 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 162 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 6988 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 7011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 14:04:35,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 761 Invalid, 7011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 6988 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 14:04:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-02-15 14:04:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2754. [2023-02-15 14:04:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2671 states have (on average 1.0363159865219018) internal successors, (2768), 2671 states have internal predecessors, (2768), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2023-02-15 14:04:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 2851 transitions. [2023-02-15 14:04:35,721 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 2851 transitions. Word has length 1003 [2023-02-15 14:04:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:04:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 2754 states and 2851 transitions. [2023-02-15 14:04:35,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 14:04:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 2851 transitions. [2023-02-15 14:04:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2023-02-15 14:04:35,732 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:04:35,733 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 14:04:35,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 14:04:35,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:04:35,944 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:04:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:04:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash 275935090, now seen corresponding path program 18 times [2023-02-15 14:04:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:04:35,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095495555] [2023-02-15 14:04:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:04:35,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:04:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 14:04:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:04:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:04:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 45703 proven. 975 refuted. 0 times theorem prover too weak. 55259 trivial. 0 not checked. [2023-02-15 14:04:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:04:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095495555] [2023-02-15 14:04:44,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095495555] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:04:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297140403] [2023-02-15 14:04:44,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 14:04:44,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:04:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:04:44,380 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:04:44,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 14:04:45,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2023-02-15 14:04:45,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:04:45,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 14:04:45,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:04:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 36168 proven. 3938 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2023-02-15 14:04:47,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:04:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 36168 proven. 3938 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2023-02-15 14:04:49,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297140403] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:04:49,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:04:49,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2023-02-15 14:04:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501919902] [2023-02-15 14:04:49,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:04:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2023-02-15 14:04:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:04:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2023-02-15 14:04:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2023-02-15 14:04:49,516 INFO L87 Difference]: Start difference. First operand 2754 states and 2851 transitions. Second operand has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 14:05:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:05:00,485 INFO L93 Difference]: Finished difference Result 10327 states and 11387 transitions. [2023-02-15 14:05:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2023-02-15 14:05:00,486 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1027 [2023-02-15 14:05:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:05:00,508 INFO L225 Difference]: With dead ends: 10327 [2023-02-15 14:05:00,508 INFO L226 Difference]: Without dead ends: 9101 [2023-02-15 14:05:00,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2472 GetRequests, 2033 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2023-02-15 14:05:00,526 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2730 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 14:05:00,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 1016 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 14:05:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9101 states. [2023-02-15 14:05:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9101 to 3362. [2023-02-15 14:05:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3268 states have (on average 1.040391676866585) internal successors, (3400), 3268 states have internal predecessors, (3400), 3 states have call successors, (3), 2 states have call predecessors, (3), 90 states have return successors, (91), 91 states have call predecessors, (91), 2 states have call successors, (91) [2023-02-15 14:05:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 3494 transitions. [2023-02-15 14:05:01,011 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 3494 transitions. Word has length 1027 [2023-02-15 14:05:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:05:01,011 INFO L495 AbstractCegarLoop]: Abstraction has 3362 states and 3494 transitions. [2023-02-15 14:05:01,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 14:05:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 3494 transitions. [2023-02-15 14:05:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-02-15 14:05:01,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:05:01,024 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 14:05:01,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 14:05:01,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-15 14:05:01,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 14:05:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:05:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1447106061, now seen corresponding path program 19 times [2023-02-15 14:05:01,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:05:01,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549234287] [2023-02-15 14:05:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:05:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:05:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 14:05:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 14:05:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 128715 backedges. 69858 proven. 1113 refuted. 0 times theorem prover too weak. 57744 trivial. 0 not checked. [2023-02-15 14:05:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:05:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549234287] [2023-02-15 14:05:12,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549234287] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:05:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041273269] [2023-02-15 14:05:12,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 14:05:12,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:05:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:05:12,525 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:05:12,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 14:05:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:05:14,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 83 conjunts are in the unsatisfiable core [2023-02-15 14:05:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:05:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 128715 backedges. 86019 proven. 6106 refuted. 0 times theorem prover too weak. 36590 trivial. 0 not checked. [2023-02-15 14:05:15,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:05:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 128715 backedges. 86019 proven. 6106 refuted. 0 times theorem prover too weak. 36590 trivial. 0 not checked. [2023-02-15 14:05:43,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041273269] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:05:43,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:05:43,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2023-02-15 14:05:43,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979924838] [2023-02-15 14:05:43,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:05:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-02-15 14:05:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:05:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-02-15 14:05:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2023-02-15 14:05:43,910 INFO L87 Difference]: Start difference. First operand 3362 states and 3494 transitions. Second operand has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19)