./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.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 de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 14:46:52,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 14:46:52,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 14:46:53,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 14:46:53,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 14:46:53,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 14:46:53,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 14:46:53,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 14:46:53,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 14:46:53,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 14:46:53,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 14:46:53,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 14:46:53,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 14:46:53,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 14:46:53,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 14:46:53,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 14:46:53,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 14:46:53,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 14:46:53,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 14:46:53,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 14:46:53,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 14:46:53,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 14:46:53,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 14:46:53,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 14:46:53,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 14:46:53,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 14:46:53,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 14:46:53,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 14:46:53,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 14:46:53,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 14:46:53,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 14:46:53,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 14:46:53,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 14:46:53,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 14:46:53,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 14:46:53,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 14:46:53,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 14:46:53,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 14:46:53,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 14:46:53,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 14:46:53,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 14:46:53,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-19 14:46:53,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 14:46:53,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 14:46:53,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 14:46:53,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 14:46:53,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 14:46:53,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 14:46:53,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 14:46:53,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 14:46:53,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 14:46:53,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:46:53,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 14:46:53,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 14:46:53,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 14:46:53,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 14:46:53,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2021-12-19 14:46:53,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 14:46:53,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 14:46:53,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 14:46:53,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 14:46:53,348 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 14:46:53,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-19 14:46:53,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b649833/d7ceaf1661634a7a8c06fa0af122bc28/FLAGd145a3a2f [2021-12-19 14:46:53,821 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 14:46:53,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-19 14:46:53,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b649833/d7ceaf1661634a7a8c06fa0af122bc28/FLAGd145a3a2f [2021-12-19 14:46:53,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b649833/d7ceaf1661634a7a8c06fa0af122bc28 [2021-12-19 14:46:53,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 14:46:53,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 14:46:53,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 14:46:53,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 14:46:53,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 14:46:53,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:53" (1/1) ... [2021-12-19 14:46:53,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476b5c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:53, skipping insertion in model container [2021-12-19 14:46:53,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:53" (1/1) ... [2021-12-19 14:46:53,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 14:46:53,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 14:46:54,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:46:54,016 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 14:46:54,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:46:54,044 INFO L208 MainTranslator]: Completed translation [2021-12-19 14:46:54,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54 WrapperNode [2021-12-19 14:46:54,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 14:46:54,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 14:46:54,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 14:46:54,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 14:46:54,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,065 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2021-12-19 14:46:54,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 14:46:54,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 14:46:54,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 14:46:54,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 14:46:54,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 14:46:54,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 14:46:54,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 14:46:54,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 14:46:54,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (1/1) ... [2021-12-19 14:46:54,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:46:54,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:54,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 14:46:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 14:46:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-19 14:46:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-19 14:46:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 14:46:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 14:46:54,204 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 14:46:54,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 14:46:54,285 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 14:46:54,290 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 14:46:54,290 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 14:46:54,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:46:54 BoogieIcfgContainer [2021-12-19 14:46:54,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 14:46:54,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 14:46:54,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 14:46:54,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 14:46:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:46:53" (1/3) ... [2021-12-19 14:46:54,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dfc9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:46:54, skipping insertion in model container [2021-12-19 14:46:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:54" (2/3) ... [2021-12-19 14:46:54,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dfc9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:46:54, skipping insertion in model container [2021-12-19 14:46:54,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:46:54" (3/3) ... [2021-12-19 14:46:54,298 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-19 14:46:54,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 14:46:54,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-19 14:46:54,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 14:46:54,334 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-19 14:46:54,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-19 14:46:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-19 14:46:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 14:46:54,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash 996822992, now seen corresponding path program 1 times [2021-12-19 14:46:54,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475069427] [2021-12-19 14:46:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475069427] [2021-12-19 14:46:54,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475069427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 14:46:54,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574059888] [2021-12-19 14:46:54,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 14:46:54,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 14:46:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:46:54,470 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:54,504 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-12-19 14:46:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 14:46:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-19 14:46:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:54,511 INFO L225 Difference]: With dead ends: 68 [2021-12-19 14:46:54,511 INFO L226 Difference]: Without dead ends: 41 [2021-12-19 14:46:54,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:46:54,516 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:54,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-19 14:46:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-12-19 14:46:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 34 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-12-19 14:46:54,538 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 8 [2021-12-19 14:46:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:54,539 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-19 14:46:54,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-12-19 14:46:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-19 14:46:54,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 14:46:54,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash 836741727, now seen corresponding path program 1 times [2021-12-19 14:46:54,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487851173] [2021-12-19 14:46:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487851173] [2021-12-19 14:46:54,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487851173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 14:46:54,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676870750] [2021-12-19 14:46:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 14:46:54,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 14:46:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:46:54,578 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:54,598 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-12-19 14:46:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 14:46:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-19 14:46:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:54,600 INFO L225 Difference]: With dead ends: 57 [2021-12-19 14:46:54,600 INFO L226 Difference]: Without dead ends: 55 [2021-12-19 14:46:54,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:46:54,601 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:54,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-19 14:46:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-12-19 14:46:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2021-12-19 14:46:54,608 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 9 [2021-12-19 14:46:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:54,608 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2021-12-19 14:46:54,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2021-12-19 14:46:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 14:46:54,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 14:46:54,609 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash 169143521, now seen corresponding path program 1 times [2021-12-19 14:46:54,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158733781] [2021-12-19 14:46:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158733781] [2021-12-19 14:46:54,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158733781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:46:54,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990469196] [2021-12-19 14:46:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:46:54,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:46:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:46:54,691 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:54,733 INFO L93 Difference]: Finished difference Result 66 states and 94 transitions. [2021-12-19 14:46:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:46:54,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2021-12-19 14:46:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:54,736 INFO L225 Difference]: With dead ends: 66 [2021-12-19 14:46:54,739 INFO L226 Difference]: Without dead ends: 65 [2021-12-19 14:46:54,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:54,741 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:54,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 35 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-19 14:46:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2021-12-19 14:46:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.625) internal successors, (78), 55 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-12-19 14:46:54,755 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 10 [2021-12-19 14:46:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-12-19 14:46:54,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-12-19 14:46:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 14:46:54,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 14:46:54,758 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash 169143170, now seen corresponding path program 1 times [2021-12-19 14:46:54,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777294796] [2021-12-19 14:46:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777294796] [2021-12-19 14:46:54,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777294796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:46:54,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121282459] [2021-12-19 14:46:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:46:54,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:46:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:46:54,824 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:54,861 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2021-12-19 14:46:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:46:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2021-12-19 14:46:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:54,863 INFO L225 Difference]: With dead ends: 60 [2021-12-19 14:46:54,863 INFO L226 Difference]: Without dead ends: 59 [2021-12-19 14:46:54,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:54,864 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:54,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-19 14:46:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-12-19 14:46:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 55 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2021-12-19 14:46:54,875 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 10 [2021-12-19 14:46:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:54,875 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2021-12-19 14:46:54,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2021-12-19 14:46:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:46:54,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 14:46:54,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 948481931, now seen corresponding path program 1 times [2021-12-19 14:46:54,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251176686] [2021-12-19 14:46:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251176686] [2021-12-19 14:46:54,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251176686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 14:46:54,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022147079] [2021-12-19 14:46:54,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:54,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:54,917 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:54,952 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2021-12-19 14:46:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:46:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2021-12-19 14:46:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:54,953 INFO L225 Difference]: With dead ends: 109 [2021-12-19 14:46:54,953 INFO L226 Difference]: Without dead ends: 108 [2021-12-19 14:46:54,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 14:46:54,955 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:54,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 82 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-19 14:46:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2021-12-19 14:46:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 99 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2021-12-19 14:46:54,963 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 11 [2021-12-19 14:46:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:54,964 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2021-12-19 14:46:54,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2021-12-19 14:46:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:46:54,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:54,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:54,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 14:46:54,965 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 948471040, now seen corresponding path program 1 times [2021-12-19 14:46:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183063750] [2021-12-19 14:46:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:54,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:54,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183063750] [2021-12-19 14:46:54,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183063750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:54,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:54,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 14:46:54,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466709720] [2021-12-19 14:46:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:54,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:54,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:54,995 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:55,030 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2021-12-19 14:46:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:46:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2021-12-19 14:46:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:55,031 INFO L225 Difference]: With dead ends: 110 [2021-12-19 14:46:55,031 INFO L226 Difference]: Without dead ends: 109 [2021-12-19 14:46:55,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 14:46:55,032 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:55,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 83 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-19 14:46:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2021-12-19 14:46:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.5053763440860215) internal successors, (140), 99 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 142 transitions. [2021-12-19 14:46:55,039 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 142 transitions. Word has length 11 [2021-12-19 14:46:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:55,040 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 142 transitions. [2021-12-19 14:46:55,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 142 transitions. [2021-12-19 14:46:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:46:55,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:55,041 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:55,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-19 14:46:55,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash 949916673, now seen corresponding path program 1 times [2021-12-19 14:46:55,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:55,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269985465] [2021-12-19 14:46:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269985465] [2021-12-19 14:46:55,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269985465] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597978035] [2021-12-19 14:46:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:55,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 14:46:55,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 14:46:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:46:55,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597978035] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:55,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:55,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:46:55,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259783906] [2021-12-19 14:46:55,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:55,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:46:55,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:46:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:46:55,162 INFO L87 Difference]: Start difference. First operand 102 states and 142 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:55,202 INFO L93 Difference]: Finished difference Result 251 states and 352 transitions. [2021-12-19 14:46:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:46:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 11 [2021-12-19 14:46:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:55,204 INFO L225 Difference]: With dead ends: 251 [2021-12-19 14:46:55,204 INFO L226 Difference]: Without dead ends: 249 [2021-12-19 14:46:55,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:46:55,205 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 142 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:55,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 70 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-19 14:46:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 120. [2021-12-19 14:46:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.4774774774774775) internal successors, (164), 117 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2021-12-19 14:46:55,213 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 11 [2021-12-19 14:46:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:55,214 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2021-12-19 14:46:55,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2021-12-19 14:46:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:46:55,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:55,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:55,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:55,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:55,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -988260788, now seen corresponding path program 1 times [2021-12-19 14:46:55,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209766315] [2021-12-19 14:46:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209766315] [2021-12-19 14:46:55,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209766315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:55,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:55,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 14:46:55,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640868840] [2021-12-19 14:46:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:55,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:55,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:55,468 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:55,492 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2021-12-19 14:46:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:46:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2021-12-19 14:46:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:55,496 INFO L225 Difference]: With dead ends: 120 [2021-12-19 14:46:55,497 INFO L226 Difference]: Without dead ends: 119 [2021-12-19 14:46:55,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 14:46:55,500 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:55,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-19 14:46:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-19 14:46:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.4414414414414414) internal successors, (160), 116 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-12-19 14:46:55,515 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 11 [2021-12-19 14:46:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:55,515 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-12-19 14:46:55,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-12-19 14:46:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:46:55,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:55,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:55,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-19 14:46:55,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash -988271679, now seen corresponding path program 1 times [2021-12-19 14:46:55,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:55,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346746103] [2021-12-19 14:46:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:55,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346746103] [2021-12-19 14:46:55,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346746103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:55,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:55,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 14:46:55,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165460112] [2021-12-19 14:46:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:55,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:55,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:46:55,557 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:55,575 INFO L93 Difference]: Finished difference Result 123 states and 166 transitions. [2021-12-19 14:46:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:46:55,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2021-12-19 14:46:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:55,576 INFO L225 Difference]: With dead ends: 123 [2021-12-19 14:46:55,576 INFO L226 Difference]: Without dead ends: 122 [2021-12-19 14:46:55,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 14:46:55,579 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:55,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-19 14:46:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 64. [2021-12-19 14:46:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 62 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2021-12-19 14:46:55,585 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 11 [2021-12-19 14:46:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:55,586 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2021-12-19 14:46:55,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2021-12-19 14:46:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-19 14:46:55,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:55,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:55,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-19 14:46:55,589 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash -364575919, now seen corresponding path program 1 times [2021-12-19 14:46:55,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637416128] [2021-12-19 14:46:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:55,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637416128] [2021-12-19 14:46:55,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637416128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:55,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029284170] [2021-12-19 14:46:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:55,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:55,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:55,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 14:46:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:55,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 14:46:55,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:55,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 14:46:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:55,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 14:46:55,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029284170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:55,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 14:46:55,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-19 14:46:55,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17885475] [2021-12-19 14:46:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:55,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:55,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-19 14:46:55,763 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:55,796 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-12-19 14:46:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:46:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 14 [2021-12-19 14:46:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:55,798 INFO L225 Difference]: With dead ends: 83 [2021-12-19 14:46:55,798 INFO L226 Difference]: Without dead ends: 82 [2021-12-19 14:46:55,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-19 14:46:55,799 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:55,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-19 14:46:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 57. [2021-12-19 14:46:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 55 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-12-19 14:46:55,808 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2021-12-19 14:46:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:55,808 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-12-19 14:46:55,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-12-19 14:46:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-19 14:46:55,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:55,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:55,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:56,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-19 14:46:56,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -723415909, now seen corresponding path program 1 times [2021-12-19 14:46:56,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:56,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571735373] [2021-12-19 14:46:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:56,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:56,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:56,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571735373] [2021-12-19 14:46:56,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571735373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:56,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248595744] [2021-12-19 14:46:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:56,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:56,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 14:46:56,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 14:46:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:56,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 14:46:56,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:56,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 14:46:56,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248595744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:56,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 14:46:56,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-19 14:46:56,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551166900] [2021-12-19 14:46:56,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:56,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 14:46:56,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 14:46:56,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-19 14:46:56,142 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:56,163 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-12-19 14:46:56,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:46:56,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16 [2021-12-19 14:46:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:56,164 INFO L225 Difference]: With dead ends: 57 [2021-12-19 14:46:56,164 INFO L226 Difference]: Without dead ends: 56 [2021-12-19 14:46:56,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-19 14:46:56,164 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:56,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-19 14:46:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-19 14:46:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2021-12-19 14:46:56,167 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 16 [2021-12-19 14:46:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:56,167 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-12-19 14:46:56,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2021-12-19 14:46:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-19 14:46:56,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:56,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:56,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:56,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:56,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 862611913, now seen corresponding path program 1 times [2021-12-19 14:46:56,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:56,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879423238] [2021-12-19 14:46:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:56,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:56,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879423238] [2021-12-19 14:46:56,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879423238] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273831255] [2021-12-19 14:46:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:56,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:56,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 14:46:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 14:46:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:56,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:46:56,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:56,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:56,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273831255] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:56,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:56,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:46:56,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13401823] [2021-12-19 14:46:56,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:56,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:46:56,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:46:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:46:56,489 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:56,506 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2021-12-19 14:46:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:46:56,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 19 [2021-12-19 14:46:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:56,507 INFO L225 Difference]: With dead ends: 105 [2021-12-19 14:46:56,507 INFO L226 Difference]: Without dead ends: 104 [2021-12-19 14:46:56,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:46:56,508 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-19 14:46:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-19 14:46:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 102 states have internal predecessors, (123), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2021-12-19 14:46:56,510 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 19 [2021-12-19 14:46:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2021-12-19 14:46:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2021-12-19 14:46:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 14:46:56,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:56,511 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:56,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:56,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:56,726 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1297323152, now seen corresponding path program 2 times [2021-12-19 14:46:56,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:56,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130511023] [2021-12-19 14:46:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:56,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-19 14:46:56,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:56,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130511023] [2021-12-19 14:46:56,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130511023] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:56,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484599796] [2021-12-19 14:46:56,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:46:56,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:56,768 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) [2021-12-19 14:46:56,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 14:46:56,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 14:46:56,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:46:56,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:46:56,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-19 14:46:56,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-19 14:46:56,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484599796] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:56,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:56,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:46:56,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71116436] [2021-12-19 14:46:56,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:56,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:46:56,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:46:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:46:56,888 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:56,904 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2021-12-19 14:46:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:46:56,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 20 [2021-12-19 14:46:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:56,906 INFO L225 Difference]: With dead ends: 144 [2021-12-19 14:46:56,906 INFO L226 Difference]: Without dead ends: 143 [2021-12-19 14:46:56,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 14:46:56,906 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:56,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-19 14:46:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 102. [2021-12-19 14:46:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 100 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2021-12-19 14:46:56,909 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 20 [2021-12-19 14:46:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:56,909 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2021-12-19 14:46:56,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2021-12-19 14:46:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-19 14:46:56,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:56,910 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:56,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:57,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-19 14:46:57,127 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1765736444, now seen corresponding path program 1 times [2021-12-19 14:46:57,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861001870] [2021-12-19 14:46:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:57,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-19 14:46:57,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:57,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861001870] [2021-12-19 14:46:57,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861001870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:46:57,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:46:57,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:46:57,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038345995] [2021-12-19 14:46:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:46:57,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:46:57,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:46:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:46:57,146 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:57,180 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2021-12-19 14:46:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:46:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 24 [2021-12-19 14:46:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:57,181 INFO L225 Difference]: With dead ends: 142 [2021-12-19 14:46:57,181 INFO L226 Difference]: Without dead ends: 141 [2021-12-19 14:46:57,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:46:57,181 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:57,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-19 14:46:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 51. [2021-12-19 14:46:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-19 14:46:57,184 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2021-12-19 14:46:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:57,184 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-19 14:46:57,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-19 14:46:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-19 14:46:57,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:57,184 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:57,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-19 14:46:57,185 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -888400098, now seen corresponding path program 2 times [2021-12-19 14:46:57,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:57,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127505378] [2021-12-19 14:46:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:57,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:57,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127505378] [2021-12-19 14:46:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127505378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982217038] [2021-12-19 14:46:57,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:46:57,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:57,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:57,224 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) [2021-12-19 14:46:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 14:46:57,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:46:57,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:46:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 14:46:57,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:57,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:57,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982217038] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:57,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:57,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-19 14:46:57,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803619883] [2021-12-19 14:46:57,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:57,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-19 14:46:57,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 14:46:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:46:57,421 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:57,451 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-12-19 14:46:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 14:46:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 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 37 [2021-12-19 14:46:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:57,452 INFO L225 Difference]: With dead ends: 100 [2021-12-19 14:46:57,452 INFO L226 Difference]: Without dead ends: 99 [2021-12-19 14:46:57,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:46:57,452 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:57,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-19 14:46:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-19 14:46:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-12-19 14:46:57,454 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 37 [2021-12-19 14:46:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:57,455 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-12-19 14:46:57,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-12-19 14:46:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-19 14:46:57,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:57,456 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:57,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:57,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-19 14:46:57,672 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:57,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1781047288, now seen corresponding path program 3 times [2021-12-19 14:46:57,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:57,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154441321] [2021-12-19 14:46:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:57,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154441321] [2021-12-19 14:46:57,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154441321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:57,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547038012] [2021-12-19 14:46:57,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 14:46:57,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:57,831 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) [2021-12-19 14:46:57,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 14:46:57,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 14:46:57,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:46:57,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 14:46:57,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:58,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547038012] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:58,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:58,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-19 14:46:58,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148485073] [2021-12-19 14:46:58,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:58,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-19 14:46:58,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-19 14:46:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:46:58,259 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:58,317 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2021-12-19 14:46:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-19 14:46:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 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 73 [2021-12-19 14:46:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:58,318 INFO L225 Difference]: With dead ends: 196 [2021-12-19 14:46:58,318 INFO L226 Difference]: Without dead ends: 195 [2021-12-19 14:46:58,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:46:58,319 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 175 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:58,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 194 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:46:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-19 14:46:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-19 14:46:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 193 states have internal predecessors, (218), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 220 transitions. [2021-12-19 14:46:58,323 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 220 transitions. Word has length 73 [2021-12-19 14:46:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:58,323 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 220 transitions. [2021-12-19 14:46:58,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:46:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 220 transitions. [2021-12-19 14:46:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-19 14:46:58,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:58,324 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:46:58,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:58,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:58,551 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:46:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2085983524, now seen corresponding path program 4 times [2021-12-19 14:46:58,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919865655] [2021-12-19 14:46:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:58,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:58,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919865655] [2021-12-19 14:46:58,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919865655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452300627] [2021-12-19 14:46:58,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 14:46:58,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:58,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:58,834 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) [2021-12-19 14:46:58,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 14:46:58,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 14:46:58,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:46:58,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-19 14:46:58,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:59,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:47:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:00,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452300627] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:47:00,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:47:00,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-19 14:47:00,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298761519] [2021-12-19 14:47:00,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:47:00,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-19 14:47:00,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:47:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-19 14:47:00,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:47:00,048 INFO L87 Difference]: Start difference. First operand 195 states and 220 transitions. Second operand has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:47:00,258 INFO L93 Difference]: Finished difference Result 388 states and 460 transitions. [2021-12-19 14:47:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-19 14:47:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 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 145 [2021-12-19 14:47:00,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:47:00,259 INFO L225 Difference]: With dead ends: 388 [2021-12-19 14:47:00,260 INFO L226 Difference]: Without dead ends: 387 [2021-12-19 14:47:00,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:47:00,261 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 493 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:47:00,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 368 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:47:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-19 14:47:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-12-19 14:47:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 384 states have (on average 1.1302083333333333) internal successors, (434), 385 states have internal predecessors, (434), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 436 transitions. [2021-12-19 14:47:00,266 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 436 transitions. Word has length 145 [2021-12-19 14:47:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:47:00,266 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 436 transitions. [2021-12-19 14:47:00,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 436 transitions. [2021-12-19 14:47:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-19 14:47:00,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:47:00,268 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:47:00,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 14:47:00,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 14:47:00,484 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:47:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:47:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 76047492, now seen corresponding path program 5 times [2021-12-19 14:47:00,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:47:00,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32553024] [2021-12-19 14:47:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:47:00,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:47:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:47:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:01,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:47:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32553024] [2021-12-19 14:47:01,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32553024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:47:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446575344] [2021-12-19 14:47:01,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 14:47:01,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:47:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:47:01,408 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) [2021-12-19 14:47:01,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 14:47:01,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 14:47:01,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:47:01,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-19 14:47:01,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:47:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:02,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:47:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:04,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446575344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:47:04,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:47:04,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-19 14:47:04,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272676255] [2021-12-19 14:47:04,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:47:04,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-19 14:47:04,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:47:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-19 14:47:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:47:04,327 INFO L87 Difference]: Start difference. First operand 387 states and 436 transitions. Second operand has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:47:05,183 INFO L93 Difference]: Finished difference Result 772 states and 916 transitions. [2021-12-19 14:47:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-19 14:47:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 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 289 [2021-12-19 14:47:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:47:05,186 INFO L225 Difference]: With dead ends: 772 [2021-12-19 14:47:05,186 INFO L226 Difference]: Without dead ends: 771 [2021-12-19 14:47:05,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:47:05,188 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1157 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 14:47:05,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 716 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 14:47:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-12-19 14:47:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2021-12-19 14:47:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 768 states have (on average 1.1276041666666667) internal successors, (866), 769 states have internal predecessors, (866), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 868 transitions. [2021-12-19 14:47:05,196 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 868 transitions. Word has length 289 [2021-12-19 14:47:05,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:47:05,197 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 868 transitions. [2021-12-19 14:47:05,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 868 transitions. [2021-12-19 14:47:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2021-12-19 14:47:05,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:47:05,203 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:47:05,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 14:47:05,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-19 14:47:05,421 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:47:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:47:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1934878676, now seen corresponding path program 6 times [2021-12-19 14:47:05,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:47:05,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930837469] [2021-12-19 14:47:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:47:05,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:47:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:47:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:08,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:47:08,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930837469] [2021-12-19 14:47:08,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930837469] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:47:08,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286538538] [2021-12-19 14:47:08,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 14:47:08,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:47:08,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:47:08,097 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) [2021-12-19 14:47:08,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 14:47:08,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 14:47:08,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:47:08,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-19 14:47:08,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:47:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:09,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:47:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:16,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286538538] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:47:16,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:47:16,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-19 14:47:16,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900993676] [2021-12-19 14:47:16,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:47:16,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-19 14:47:16,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:47:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-19 14:47:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:47:16,734 INFO L87 Difference]: Start difference. First operand 771 states and 868 transitions. Second operand has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:47:24,911 INFO L93 Difference]: Finished difference Result 1540 states and 1828 transitions. [2021-12-19 14:47:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-19 14:47:24,912 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 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 577 [2021-12-19 14:47:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:47:24,915 INFO L225 Difference]: With dead ends: 1540 [2021-12-19 14:47:24,915 INFO L226 Difference]: Without dead ends: 1539 [2021-12-19 14:47:24,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:47:24,918 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2813 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 14:47:24,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2813 Valid, 1364 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 14:47:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-12-19 14:47:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1539. [2021-12-19 14:47:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1536 states have (on average 1.1263020833333333) internal successors, (1730), 1537 states have internal predecessors, (1730), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1732 transitions. [2021-12-19 14:47:24,933 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1732 transitions. Word has length 577 [2021-12-19 14:47:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:47:24,933 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1732 transitions. [2021-12-19 14:47:24,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:47:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1732 transitions. [2021-12-19 14:47:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2021-12-19 14:47:24,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:47:24,957 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:47:24,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 14:47:25,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:47:25,181 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:47:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:47:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 648621684, now seen corresponding path program 7 times [2021-12-19 14:47:25,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:47:25,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702689532] [2021-12-19 14:47:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:47:25,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:47:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:47:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:35,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:47:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702689532] [2021-12-19 14:47:35,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702689532] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:47:35,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211394022] [2021-12-19 14:47:35,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 14:47:35,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:47:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:47:35,328 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) [2021-12-19 14:47:35,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 14:47:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:47:35,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-19 14:47:35,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:47:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:37,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:48:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:48:06,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211394022] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:48:06,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:48:06,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-19 14:48:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969553946] [2021-12-19 14:48:06,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:48:06,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-19 14:48:06,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:48:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-19 14:48:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:48:06,389 INFO L87 Difference]: Start difference. First operand 1539 states and 1732 transitions. Second operand has 384 states, 383 states have (on average 6.007832898172324) internal successors, (2301), 384 states have internal predecessors, (2301), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:50:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:50:05,294 INFO L93 Difference]: Finished difference Result 3076 states and 3652 transitions. [2021-12-19 14:50:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-19 14:50:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.007832898172324) internal successors, (2301), 384 states have internal predecessors, (2301), 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 1153 [2021-12-19 14:50:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:50:05,315 INFO L225 Difference]: With dead ends: 3076 [2021-12-19 14:50:05,315 INFO L226 Difference]: Without dead ends: 3075 [2021-12-19 14:50:05,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2496 GetRequests, 2114 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:50:05,321 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 5622 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5622 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 14:50:05,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5622 Valid, 2732 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 14:50:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-12-19 14:50:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2021-12-19 14:50:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 3072 states have (on average 1.1256510416666667) internal successors, (3458), 3073 states have internal predecessors, (3458), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:50:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 3460 transitions. [2021-12-19 14:50:05,349 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 3460 transitions. Word has length 1153 [2021-12-19 14:50:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:50:05,350 INFO L470 AbstractCegarLoop]: Abstraction has 3075 states and 3460 transitions. [2021-12-19 14:50:05,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.007832898172324) internal successors, (2301), 384 states have internal predecessors, (2301), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:50:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 3460 transitions. [2021-12-19 14:50:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2306 [2021-12-19 14:50:05,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:50:05,383 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 383, 383, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:50:05,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-19 14:50:05,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:50:05,600 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-19 14:50:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:50:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash -263406668, now seen corresponding path program 8 times [2021-12-19 14:50:05,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:50:05,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507430300] [2021-12-19 14:50:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:50:05,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:50:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:50:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:50:49,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:50:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507430300] [2021-12-19 14:50:49,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507430300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:50:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415917091] [2021-12-19 14:50:49,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:50:49,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:50:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:50:49,026 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) [2021-12-19 14:50:49,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 14:50:49,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:50:49,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:50:50,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 6537 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-19 14:50:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:50:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:50:53,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:52:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:52:42,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415917091] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:52:42,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:52:42,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-12-19 14:52:42,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085632855] [2021-12-19 14:52:42,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:52:42,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-12-19 14:52:42,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:52:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-12-19 14:52:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2021-12-19 14:52:42,083 INFO L87 Difference]: Start difference. First operand 3075 states and 3460 transitions. Second operand has 768 states, 767 states have (on average 6.003911342894393) internal successors, (4605), 768 states have internal predecessors, (4605), 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) Killed by 15