./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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/Arrays01-EquivalentConstantIndices-1.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 cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:40:42,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:40:42,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:40:43,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:40:43,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:40:43,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:40:43,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:40:43,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:40:43,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:40:43,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:40:43,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:40:43,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:40:43,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:40:43,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:40:43,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:40:43,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:40:43,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:40:43,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:40:43,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:40:43,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:40:43,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:40:43,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:40:43,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:40:43,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:40:43,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:40:43,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:40:43,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:40:43,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:40:43,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:40:43,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:40:43,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:40:43,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:40:43,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:40:43,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:40:43,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:40:43,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:40:43,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:40:43,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:40:43,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:40:43,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:40:43,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:40:43,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:40:43,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:40:43,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:40:43,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:40:43,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:40:43,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:40:43,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:40:43,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:40:43,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:40:43,114 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:40:43,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:40:43,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:40:43,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:40:43,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:40:43,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:40:43,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:40:43,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:40:43,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:40:43,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:40:43,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:40:43,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2021-12-28 08:40:43,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:40:43,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:40:43,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:40:43,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:40:43,393 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:40:43,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-12-28 08:40:43,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5398d6bc2/acfdff0273304a48aaf91c9063e2ec7a/FLAGaeb3b8aae [2021-12-28 08:40:43,820 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:40:43,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-12-28 08:40:43,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5398d6bc2/acfdff0273304a48aaf91c9063e2ec7a/FLAGaeb3b8aae [2021-12-28 08:40:43,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5398d6bc2/acfdff0273304a48aaf91c9063e2ec7a [2021-12-28 08:40:43,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:40:43,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:40:43,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:40:43,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:40:43,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:40:43,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:43,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1950aad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43, skipping insertion in model container [2021-12-28 08:40:43,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:43,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:40:43,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:40:43,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:40:43,950 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:40:43,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:40:43,972 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:40:43,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43 WrapperNode [2021-12-28 08:40:43,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:40:43,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:40:43,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:40:43,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:40:43,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:43,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,020 INFO L137 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-28 08:40:44,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:40:44,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:40:44,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:40:44,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:40:44,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:40:44,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:40:44,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:40:44,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:40:44,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (1/1) ... [2021-12-28 08:40:44,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:40:44,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:44,097 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) [2021-12-28 08:40:44,115 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 [2021-12-28 08:40:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 08:40:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:40:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:40:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 08:40:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 08:40:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 08:40:44,177 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:40:44,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:40:44,302 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:40:44,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:40:44,306 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 08:40:44,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:40:44 BoogieIcfgContainer [2021-12-28 08:40:44,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:40:44,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:40:44,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:40:44,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:40:44,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:40:43" (1/3) ... [2021-12-28 08:40:44,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acca58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:40:44, skipping insertion in model container [2021-12-28 08:40:44,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:40:43" (2/3) ... [2021-12-28 08:40:44,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acca58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:40:44, skipping insertion in model container [2021-12-28 08:40:44,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:40:44" (3/3) ... [2021-12-28 08:40:44,312 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2021-12-28 08:40:44,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:40:44,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 08:40:44,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:40:44,394 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 [2021-12-28 08:40:44,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 08:40:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-28 08:40:44,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:44,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-28 08:40:44,414 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2021-12-28 08:40:44,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:44,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095626845] [2021-12-28 08:40:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:44,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:44,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:44,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095626845] [2021-12-28 08:40:44,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095626845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:40:44,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:40:44,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:40:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737087433] [2021-12-28 08:40:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:40:44,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:40:44,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:40:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:40:44,613 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:44,661 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-12-28 08:40:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:40:44,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-28 08:40:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:44,669 INFO L225 Difference]: With dead ends: 34 [2021-12-28 08:40:44,669 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 08:40:44,672 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 [2021-12-28 08:40:44,675 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:44,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:40:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 08:40:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 08:40:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-28 08:40:44,697 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-12-28 08:40:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:44,698 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-28 08:40:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-28 08:40:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:40:44,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:44,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-28 08:40:44,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:40:44,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2021-12-28 08:40:44,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216575510] [2021-12-28 08:40:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:44,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:40:44,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216575510] [2021-12-28 08:40:44,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216575510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:40:44,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:40:44,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:40:44,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763080158] [2021-12-28 08:40:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:40:44,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:40:44,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:40:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:40:44,768 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:44,787 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-12-28 08:40:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:40:44,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-28 08:40:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:44,790 INFO L225 Difference]: With dead ends: 18 [2021-12-28 08:40:44,790 INFO L226 Difference]: Without dead ends: 17 [2021-12-28 08:40:44,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:40:44,794 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:44,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:40:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-28 08:40:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-28 08:40:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-12-28 08:40:44,802 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-12-28 08:40:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:44,802 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-12-28 08:40:44,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-12-28 08:40:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:40:44,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:44,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:44,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:40:44,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2021-12-28 08:40:44,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:44,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214863939] [2021-12-28 08:40:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:44,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:44,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:44,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214863939] [2021-12-28 08:40:44,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214863939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:44,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317531778] [2021-12-28 08:40:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:44,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:44,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:44,868 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) [2021-12-28 08:40:44,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:40:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:44,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:40:44,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:40:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317531778] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:40:45,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:40:45,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-28 08:40:45,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15852431] [2021-12-28 08:40:45,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:40:45,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 08:40:45,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 08:40:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:40:45,103 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:45,176 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-12-28 08:40:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 08:40:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 08:40:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:45,177 INFO L225 Difference]: With dead ends: 29 [2021-12-28 08:40:45,177 INFO L226 Difference]: Without dead ends: 23 [2021-12-28 08:40:45,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-28 08:40:45,178 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:45,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:40:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-28 08:40:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-12-28 08:40:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-12-28 08:40:45,181 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-12-28 08:40:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:45,182 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-28 08:40:45,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-12-28 08:40:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:40:45,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:45,182 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-12-28 08:40:45,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:45,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:45,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2021-12-28 08:40:45,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697046639] [2021-12-28 08:40:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:45,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697046639] [2021-12-28 08:40:45,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697046639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:45,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120819240] [2021-12-28 08:40:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:45,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:45,453 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) [2021-12-28 08:40:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:45,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 08:40:45,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:45,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 08:40:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:40:45,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120819240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:40:45,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:40:45,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-28 08:40:45,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293332687] [2021-12-28 08:40:45,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:40:45,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:40:45,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:40:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 08:40:45,516 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:45,539 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-12-28 08:40:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:40:45,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 08:40:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:45,540 INFO L225 Difference]: With dead ends: 22 [2021-12-28 08:40:45,540 INFO L226 Difference]: Without dead ends: 21 [2021-12-28 08:40:45,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:40:45,541 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:45,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:40:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-28 08:40:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-28 08:40:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-12-28 08:40:45,544 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-12-28 08:40:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:45,544 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-12-28 08:40:45,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-12-28 08:40:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 08:40:45,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:45,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:45,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:45,765 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,SelfDestructingSolverStorable3 [2021-12-28 08:40:45,765 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 2 times [2021-12-28 08:40:45,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:45,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703242535] [2021-12-28 08:40:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:45,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703242535] [2021-12-28 08:40:45,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703242535] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611681711] [2021-12-28 08:40:45,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:40:45,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:45,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:45,879 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) [2021-12-28 08:40:45,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 08:40:45,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:40:45,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:40:45,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 08:40:45,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:45,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:40:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:46,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611681711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:40:46,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:40:46,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-28 08:40:46,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579056859] [2021-12-28 08:40:46,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:40:46,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 08:40:46,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 08:40:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-28 08:40:46,062 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:46,151 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-28 08:40:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 08:40:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-28 08:40:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:46,152 INFO L225 Difference]: With dead ends: 43 [2021-12-28 08:40:46,152 INFO L226 Difference]: Without dead ends: 37 [2021-12-28 08:40:46,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-12-28 08:40:46,154 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:46,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 56 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:40:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-28 08:40:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-28 08:40:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-12-28 08:40:46,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 18 [2021-12-28 08:40:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:46,158 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-12-28 08:40:46,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-12-28 08:40:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 08:40:46,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:46,159 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:46,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:46,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:46,377 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 3 times [2021-12-28 08:40:46,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:46,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269876301] [2021-12-28 08:40:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:46,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:46,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:46,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269876301] [2021-12-28 08:40:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269876301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:46,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461348421] [2021-12-28 08:40:46,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:40:46,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:46,514 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) [2021-12-28 08:40:46,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 08:40:46,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-28 08:40:46,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:40:46,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 08:40:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:46,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:40:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:46,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461348421] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:40:46,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:40:46,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2021-12-28 08:40:46,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818408931] [2021-12-28 08:40:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:40:46,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-28 08:40:46,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-28 08:40:46,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2021-12-28 08:40:46,862 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:47,071 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2021-12-28 08:40:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-28 08:40:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-28 08:40:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:47,072 INFO L225 Difference]: With dead ends: 75 [2021-12-28 08:40:47,072 INFO L226 Difference]: Without dead ends: 69 [2021-12-28 08:40:47,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 08:40:47,074 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 75 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:47,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 61 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:40:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-28 08:40:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-28 08:40:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.044776119402985) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-12-28 08:40:47,079 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 34 [2021-12-28 08:40:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:47,079 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-12-28 08:40:47,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-12-28 08:40:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 08:40:47,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:47,081 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:47,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:47,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:47,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 4 times [2021-12-28 08:40:47,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:47,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517276651] [2021-12-28 08:40:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:47,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:47,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:47,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517276651] [2021-12-28 08:40:47,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517276651] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:47,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144486680] [2021-12-28 08:40:47,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:40:47,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:47,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:47,764 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) [2021-12-28 08:40:47,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 08:40:47,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:40:47,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:40:47,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-28 08:40:47,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:47,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:40:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:48,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144486680] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:40:48,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:40:48,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2021-12-28 08:40:48,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631641098] [2021-12-28 08:40:48,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:40:48,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-28 08:40:48,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-28 08:40:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2021-12-28 08:40:48,687 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:49,314 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2021-12-28 08:40:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-28 08:40:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-28 08:40:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:49,316 INFO L225 Difference]: With dead ends: 139 [2021-12-28 08:40:49,316 INFO L226 Difference]: Without dead ends: 133 [2021-12-28 08:40:49,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2595, Invalid=6525, Unknown=0, NotChecked=0, Total=9120 [2021-12-28 08:40:49,319 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 199 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:49,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 76 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:40:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-28 08:40:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-28 08:40:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 132 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2021-12-28 08:40:49,327 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 66 [2021-12-28 08:40:49,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:49,328 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2021-12-28 08:40:49,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 66 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2021-12-28 08:40:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 08:40:49,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:49,331 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:49,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:49,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:49,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1342277263, now seen corresponding path program 5 times [2021-12-28 08:40:49,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:49,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141632881] [2021-12-28 08:40:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:49,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:40:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:51,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:40:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141632881] [2021-12-28 08:40:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141632881] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:40:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116218205] [2021-12-28 08:40:51,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:40:51,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:51,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:40:51,104 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) [2021-12-28 08:40:51,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 08:40:51,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-12-28 08:40:51,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:40:51,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-28 08:40:51,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:40:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:52,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:40:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:40:54,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116218205] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:40:54,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:40:54,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2021-12-28 08:40:54,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69477355] [2021-12-28 08:40:54,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:40:54,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-12-28 08:40:54,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:40:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-12-28 08:40:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2021-12-28 08:40:54,802 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:40:56,916 INFO L93 Difference]: Finished difference Result 267 states and 300 transitions. [2021-12-28 08:40:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-12-28 08:40:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-28 08:40:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:40:56,918 INFO L225 Difference]: With dead ends: 267 [2021-12-28 08:40:56,918 INFO L226 Difference]: Without dead ends: 261 [2021-12-28 08:40:56,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2021-12-28 08:40:56,924 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 411 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:40:56,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 120 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:40:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-28 08:40:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2021-12-28 08:40:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 259 states have (on average 1.0115830115830116) internal successors, (262), 260 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2021-12-28 08:40:56,948 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 130 [2021-12-28 08:40:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:40:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2021-12-28 08:40:56,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:40:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2021-12-28 08:40:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-28 08:40:56,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:40:56,951 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2021-12-28 08:40:56,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 08:40:57,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:40:57,184 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:40:57,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:40:57,184 INFO L85 PathProgramCache]: Analyzing trace with hash 461096719, now seen corresponding path program 6 times [2021-12-28 08:40:57,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:40:57,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771420615] [2021-12-28 08:40:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:40:57,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:40:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:41:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:41:01,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:41:01,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771420615] [2021-12-28 08:41:01,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771420615] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:41:01,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747064656] [2021-12-28 08:41:01,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:41:01,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:41:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:41:01,038 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) [2021-12-28 08:41:01,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process