./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:24:37,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:24:37,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:24:38,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:24:38,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:24:38,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:24:38,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:24:38,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:24:38,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:24:38,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:24:38,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:24:38,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:24:38,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:24:38,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:24:38,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:24:38,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:24:38,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:24:38,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:24:38,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:24:38,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:24:38,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:24:38,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:24:38,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:24:38,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:24:38,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:24:38,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:24:38,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:24:38,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:24:38,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:24:38,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:24:38,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:24:38,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:24:38,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:24:38,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:24:38,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:24:38,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:24:38,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:24:38,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:24:38,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:24:38,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:24:38,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:24:38,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:24:38,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:24:38,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:24:38,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:24:38,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:24:38,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:24:38,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:24:38,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:24:38,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:24:38,070 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:24:38,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:24:38,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:24:38,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:24:38,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:24:38,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:24:38,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:24:38,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:24:38,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:24:38,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:24:38,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:24:38,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:24:38,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:24:38,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:24:38,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:24:38,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:24:38,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a [2021-12-19 15:24:38,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:24:38,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:24:38,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:24:38,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:24:38,288 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:24:38,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2021-12-19 15:24:38,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f332c375/3fce46ec80b140e2be17d30aaf14271f/FLAG41b3e5c4f [2021-12-19 15:24:38,694 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:24:38,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2021-12-19 15:24:38,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f332c375/3fce46ec80b140e2be17d30aaf14271f/FLAG41b3e5c4f [2021-12-19 15:24:38,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f332c375/3fce46ec80b140e2be17d30aaf14271f [2021-12-19 15:24:38,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:24:38,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:24:38,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:24:38,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:24:38,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:24:38,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1d0c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38, skipping insertion in model container [2021-12-19 15:24:38,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:24:38,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:24:38,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2021-12-19 15:24:38,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:24:38,862 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:24:38,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2021-12-19 15:24:38,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:24:38,880 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:24:38,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38 WrapperNode [2021-12-19 15:24:38,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:24:38,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:24:38,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:24:38,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:24:38,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,900 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-19 15:24:38,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:24:38,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:24:38,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:24:38,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:24:38,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:24:38,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:24:38,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:24:38,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:24:38,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (1/1) ... [2021-12-19 15:24:38,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:24:38,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:38,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 15:24:38,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 15:24:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:24:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:24:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:24:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:24:39,041 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:24:39,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:24:39,164 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:24:39,168 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:24:39,168 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 15:24:39,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:24:39 BoogieIcfgContainer [2021-12-19 15:24:39,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:24:39,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:24:39,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:24:39,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:24:39,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:24:38" (1/3) ... [2021-12-19 15:24:39,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4501f6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:24:39, skipping insertion in model container [2021-12-19 15:24:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:24:38" (2/3) ... [2021-12-19 15:24:39,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4501f6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:24:39, skipping insertion in model container [2021-12-19 15:24:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:24:39" (3/3) ... [2021-12-19 15:24:39,175 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark24_conjunctive.i [2021-12-19 15:24:39,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:24:39,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-19 15:24:39,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:24:39,244 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-19 15:24:39,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-19 15:24:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-12-19 15:24:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 15:24:39,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 15:24:39,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-19 15:24:39,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290307453] [2021-12-19 15:24:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290307453] [2021-12-19 15:24:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290307453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:24:39,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299178299] [2021-12-19 15:24:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:24:39,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:24:39,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:24:39,455 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-12-19 15:24:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,510 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-12-19 15:24:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:24:39,512 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 [2021-12-19 15:24:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,518 INFO L225 Difference]: With dead ends: 38 [2021-12-19 15:24:39,518 INFO L226 Difference]: Without dead ends: 19 [2021-12-19 15:24:39,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:24:39,524 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-19 15:24:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-19 15:24:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 18 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) [2021-12-19 15:24:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-12-19 15:24:39,547 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 5 [2021-12-19 15:24:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,547 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-12-19 15:24:39,548 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) [2021-12-19 15:24:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-12-19 15:24:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 15:24:39,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 15:24:39,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:24:39,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash 28695922, now seen corresponding path program 1 times [2021-12-19 15:24:39,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417817447] [2021-12-19 15:24:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417817447] [2021-12-19 15:24:39,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417817447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:24:39,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25898487] [2021-12-19 15:24:39,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:24:39,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:24:39,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:24:39,583 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. 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) [2021-12-19 15:24:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,618 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-12-19 15:24:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:24:39,618 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 [2021-12-19 15:24:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,620 INFO L225 Difference]: With dead ends: 31 [2021-12-19 15:24:39,620 INFO L226 Difference]: Without dead ends: 30 [2021-12-19 15:24:39,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:24:39,625 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 25 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-19 15:24:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-12-19 15:24:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5714285714285714) 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) [2021-12-19 15:24:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-12-19 15:24:39,633 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 5 [2021-12-19 15:24:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,634 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-12-19 15:24:39,634 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) [2021-12-19 15:24:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-12-19 15:24:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:24:39,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:24:39,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-19 15:24:39,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399286042] [2021-12-19 15:24:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399286042] [2021-12-19 15:24:39,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399286042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:24:39,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927839315] [2021-12-19 15:24:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:24:39,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:24:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:24:39,678 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-19 15:24:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,696 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-12-19 15:24:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:24:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-19 15:24:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,698 INFO L225 Difference]: With dead ends: 30 [2021-12-19 15:24:39,698 INFO L226 Difference]: Without dead ends: 28 [2021-12-19 15:24:39,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:24:39,699 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-19 15:24:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-12-19 15:24:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-12-19 15:24:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-19 15:24:39,702 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2021-12-19 15:24:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,702 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-19 15:24:39,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-19 15:24:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-19 15:24:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 15:24:39,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 15:24:39,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-19 15:24:39,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33997329] [2021-12-19 15:24:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33997329] [2021-12-19 15:24:39,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33997329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:24:39,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444895949] [2021-12-19 15:24:39,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:24:39,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:24:39,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,734 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 15:24:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,751 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-12-19 15:24:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:24:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-19 15:24:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,752 INFO L225 Difference]: With dead ends: 31 [2021-12-19 15:24:39,752 INFO L226 Difference]: Without dead ends: 30 [2021-12-19 15:24:39,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,756 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-19 15:24:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-12-19 15:24:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-12-19 15:24:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-19 15:24:39,764 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 7 [2021-12-19 15:24:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,765 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-19 15:24:39,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 15:24:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-19 15:24:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 15:24:39,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 15:24:39,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1806979220, now seen corresponding path program 1 times [2021-12-19 15:24:39,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283354415] [2021-12-19 15:24:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283354415] [2021-12-19 15:24:39,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283354415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:24:39,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230437692] [2021-12-19 15:24:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:24:39,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:24:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,792 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 15:24:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,805 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-12-19 15:24:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:24:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-19 15:24:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,806 INFO L225 Difference]: With dead ends: 25 [2021-12-19 15:24:39,806 INFO L226 Difference]: Without dead ends: 24 [2021-12-19 15:24:39,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,807 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-19 15:24:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-19 15:24:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-12-19 15:24:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-19 15:24:39,815 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 7 [2021-12-19 15:24:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,815 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-19 15:24:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 15:24:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-19 15:24:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 15:24:39,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 15:24:39,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-19 15:24:39,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274310244] [2021-12-19 15:24:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274310244] [2021-12-19 15:24:39,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274310244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:24:39,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971292337] [2021-12-19 15:24:39,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:24:39,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:24:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,848 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:24:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,858 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-12-19 15:24:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:24:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-19 15:24:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,859 INFO L225 Difference]: With dead ends: 24 [2021-12-19 15:24:39,859 INFO L226 Difference]: Without dead ends: 23 [2021-12-19 15:24:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,860 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-19 15:24:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-19 15:24:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 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) [2021-12-19 15:24:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-19 15:24:39,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 8 [2021-12-19 15:24:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,863 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-19 15:24:39,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:24:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-19 15:24:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 15:24:39,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-19 15:24:39,865 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash 181781037, now seen corresponding path program 1 times [2021-12-19 15:24:39,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747872254] [2021-12-19 15:24:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747872254] [2021-12-19 15:24:39,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747872254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:24:39,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:24:39,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:24:39,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014809402] [2021-12-19 15:24:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:24:39,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:24:39,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:24:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,882 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:24:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:39,887 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-19 15:24:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:24:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-19 15:24:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:39,888 INFO L225 Difference]: With dead ends: 23 [2021-12-19 15:24:39,888 INFO L226 Difference]: Without dead ends: 18 [2021-12-19 15:24:39,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:24:39,889 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:39,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-19 15:24:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-19 15:24:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 17 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) [2021-12-19 15:24:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-12-19 15:24:39,893 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2021-12-19 15:24:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:39,893 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-12-19 15:24:39,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:24:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-12-19 15:24:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 15:24:39,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:39,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-19 15:24:39,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 47508542, now seen corresponding path program 1 times [2021-12-19 15:24:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439719533] [2021-12-19 15:24:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:39,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439719533] [2021-12-19 15:24:39,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439719533] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876089986] [2021-12-19 15:24:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:39,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:39,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:39,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:24:39,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:39,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:24:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:40,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:40,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876089986] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:40,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:40,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2021-12-19 15:24:40,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190243282] [2021-12-19 15:24:40,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:40,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 15:24:40,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 15:24:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:24:40,182 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-12-19 15:24:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:40,270 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-12-19 15:24:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-19 15:24:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 [2021-12-19 15:24:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:40,271 INFO L225 Difference]: With dead ends: 32 [2021-12-19 15:24:40,272 INFO L226 Difference]: Without dead ends: 31 [2021-12-19 15:24:40,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:24:40,272 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:40,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 18 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:24:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-19 15:24:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-12-19 15:24:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-12-19 15:24:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-12-19 15:24:40,275 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 10 [2021-12-19 15:24:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:40,276 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-12-19 15:24:40,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-12-19 15:24:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-12-19 15:24:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 15:24:40,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:40,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:40,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:40,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:40,502 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-12-19 15:24:40,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248291784] [2021-12-19 15:24:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:40,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:40,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:40,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248291784] [2021-12-19 15:24:40,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248291784] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10633331] [2021-12-19 15:24:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:40,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:40,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:40,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:24:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:40,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:24:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:40,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:40,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10633331] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:40,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:40,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-19 15:24:40,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754827511] [2021-12-19 15:24:40,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:40,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 15:24:40,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 15:24:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:24:40,667 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 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) [2021-12-19 15:24:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:40,762 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-19 15:24:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 15:24:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 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) Word has length 11 [2021-12-19 15:24:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:40,763 INFO L225 Difference]: With dead ends: 42 [2021-12-19 15:24:40,763 INFO L226 Difference]: Without dead ends: 38 [2021-12-19 15:24:40,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:24:40,764 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:40,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 23 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-19 15:24:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2021-12-19 15:24:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 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) [2021-12-19 15:24:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-19 15:24:40,772 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 11 [2021-12-19 15:24:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:40,772 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-19 15:24:40,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 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) [2021-12-19 15:24:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-19 15:24:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 15:24:40,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:40,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:40,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:40,988 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,SelfDestructingSolverStorable8 [2021-12-19 15:24:40,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-12-19 15:24:40,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:40,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329904277] [2021-12-19 15:24:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:40,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:41,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329904277] [2021-12-19 15:24:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329904277] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:41,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498045356] [2021-12-19 15:24:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:41,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:41,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:41,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:24:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:24:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498045356] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:41,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 15:24:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531525705] [2021-12-19 15:24:41,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:24:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:24:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:24:41,084 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-12-19 15:24:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:41,101 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-12-19 15:24:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:24:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) Word has length 12 [2021-12-19 15:24:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:41,102 INFO L225 Difference]: With dead ends: 41 [2021-12-19 15:24:41,102 INFO L226 Difference]: Without dead ends: 40 [2021-12-19 15:24:41,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:24:41,103 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:41,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-19 15:24:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-12-19 15:24:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 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) [2021-12-19 15:24:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-12-19 15:24:41,106 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 12 [2021-12-19 15:24:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:41,107 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-12-19 15:24:41,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2021-12-19 15:24:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-12-19 15:24:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-19 15:24:41,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:41,107 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 15:24:41,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:41,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:41,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2074320501, now seen corresponding path program 1 times [2021-12-19 15:24:41,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941362093] [2021-12-19 15:24:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:41,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941362093] [2021-12-19 15:24:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941362093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828393328] [2021-12-19 15:24:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:41,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:41,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:41,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:41,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:24:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:41,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-19 15:24:41,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:41,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828393328] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:41,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:41,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-12-19 15:24:41,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358499951] [2021-12-19 15:24:41,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:41,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-19 15:24:41,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-19 15:24:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:24:41,601 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) 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) [2021-12-19 15:24:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:41,721 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-12-19 15:24:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:24:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) 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 16 [2021-12-19 15:24:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:41,721 INFO L225 Difference]: With dead ends: 34 [2021-12-19 15:24:41,721 INFO L226 Difference]: Without dead ends: 30 [2021-12-19 15:24:41,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2021-12-19 15:24:41,722 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:41,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 12 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-19 15:24:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-19 15:24:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-12-19 15:24:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-12-19 15:24:41,725 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 16 [2021-12-19 15:24:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:41,725 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-12-19 15:24:41,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) 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) [2021-12-19 15:24:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-12-19 15:24:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 15:24:41,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:41,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-19 15:24:41,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:41,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:41,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773314, now seen corresponding path program 2 times [2021-12-19 15:24:41,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:41,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550317802] [2021-12-19 15:24:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:41,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:42,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:42,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550317802] [2021-12-19 15:24:42,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550317802] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:42,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930733093] [2021-12-19 15:24:42,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:24:42,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:42,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:42,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:42,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:24:42,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:24:42,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:42,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-19 15:24:42,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:42,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:42,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930733093] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:42,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:42,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 31 [2021-12-19 15:24:42,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132926971] [2021-12-19 15:24:42,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:42,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-19 15:24:42,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-19 15:24:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:24:42,466 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 32 states have internal predecessors, (55), 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) [2021-12-19 15:24:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:42,753 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-12-19 15:24:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-19 15:24:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 32 states have internal predecessors, (55), 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 20 [2021-12-19 15:24:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:42,754 INFO L225 Difference]: With dead ends: 47 [2021-12-19 15:24:42,754 INFO L226 Difference]: Without dead ends: 44 [2021-12-19 15:24:42,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=447, Invalid=1359, Unknown=0, NotChecked=0, Total=1806 [2021-12-19 15:24:42,755 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:42,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 21 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:24:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-19 15:24:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-12-19 15:24:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 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) [2021-12-19 15:24:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-12-19 15:24:42,757 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 20 [2021-12-19 15:24:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:42,757 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-12-19 15:24:42,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 32 states have internal predecessors, (55), 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) [2021-12-19 15:24:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-12-19 15:24:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 15:24:42,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:42,758 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-19 15:24:42,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:42,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 15:24:42,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-12-19 15:24:42,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:42,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233552086] [2021-12-19 15:24:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:42,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:43,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:43,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233552086] [2021-12-19 15:24:43,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233552086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387275348] [2021-12-19 15:24:43,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:24:43,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:43,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:43,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:24:43,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:24:43,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:43,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:24:43,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:43,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387275348] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:43,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:43,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-19 15:24:43,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714935466] [2021-12-19 15:24:43,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:43,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-19 15:24:43,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 15:24:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 15:24:43,179 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-12-19 15:24:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:43,218 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-12-19 15:24:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 15:24:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 27 [2021-12-19 15:24:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:43,218 INFO L225 Difference]: With dead ends: 67 [2021-12-19 15:24:43,218 INFO L226 Difference]: Without dead ends: 66 [2021-12-19 15:24:43,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 15:24:43,219 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:43,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:24:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-19 15:24:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-12-19 15:24:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 59 states have internal predecessors, (63), 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) [2021-12-19 15:24:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-12-19 15:24:43,222 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 27 [2021-12-19 15:24:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:43,223 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-12-19 15:24:43,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-12-19 15:24:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-12-19 15:24:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-19 15:24:43,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:43,224 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-19 15:24:43,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-19 15:24:43,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:43,440 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash 915144126, now seen corresponding path program 3 times [2021-12-19 15:24:43,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:43,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951373070] [2021-12-19 15:24:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:43,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:43,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:43,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951373070] [2021-12-19 15:24:43,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951373070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:43,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65356521] [2021-12-19 15:24:43,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:24:43,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:43,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:43,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:24:43,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-19 15:24:43,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:43,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-19 15:24:43,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:43,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:44,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65356521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:44,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:44,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 63 [2021-12-19 15:24:44,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057752275] [2021-12-19 15:24:44,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:44,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-19 15:24:44,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-19 15:24:44,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=805, Invalid=3227, Unknown=0, NotChecked=0, Total=4032 [2021-12-19 15:24:44,425 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 64 states have internal predecessors, (115), 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) [2021-12-19 15:24:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:45,566 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-12-19 15:24:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-19 15:24:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 64 states have internal predecessors, (115), 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 40 [2021-12-19 15:24:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:45,567 INFO L225 Difference]: With dead ends: 89 [2021-12-19 15:24:45,567 INFO L226 Difference]: Without dead ends: 86 [2021-12-19 15:24:45,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3268 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1829, Invalid=6361, Unknown=0, NotChecked=0, Total=8190 [2021-12-19 15:24:45,569 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 279 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:45,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 36 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:24:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-19 15:24:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-12-19 15:24:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.075) internal successors, (86), 81 states have internal predecessors, (86), 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) [2021-12-19 15:24:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-12-19 15:24:45,578 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 40 [2021-12-19 15:24:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-12-19 15:24:45,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 64 states have internal predecessors, (115), 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) [2021-12-19 15:24:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-12-19 15:24:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-19 15:24:45,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:45,581 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-19 15:24:45,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:45,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:45,791 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 3 times [2021-12-19 15:24:45,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:45,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649481590] [2021-12-19 15:24:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:45,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:45,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649481590] [2021-12-19 15:24:45,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649481590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:45,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157497297] [2021-12-19 15:24:45,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:24:45,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:45,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:24:45,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 15:24:45,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:45,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:24:45,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:46,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:46,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157497297] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:46,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:46,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-19 15:24:46,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870634806] [2021-12-19 15:24:46,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:46,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-19 15:24:46,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-19 15:24:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 15:24:46,203 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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) [2021-12-19 15:24:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:46,275 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-12-19 15:24:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-19 15:24:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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 57 [2021-12-19 15:24:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:46,277 INFO L225 Difference]: With dead ends: 135 [2021-12-19 15:24:46,277 INFO L226 Difference]: Without dead ends: 134 [2021-12-19 15:24:46,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 15:24:46,279 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:46,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 63 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:24:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-19 15:24:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2021-12-19 15:24:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.076271186440678) internal successors, (127), 119 states have internal predecessors, (127), 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) [2021-12-19 15:24:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-12-19 15:24:46,293 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 57 [2021-12-19 15:24:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:46,294 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-12-19 15:24:46,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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) [2021-12-19 15:24:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-12-19 15:24:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-19 15:24:46,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:46,296 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-12-19 15:24:46,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:46,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-19 15:24:46,525 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526782, now seen corresponding path program 4 times [2021-12-19 15:24:46,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:46,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873803530] [2021-12-19 15:24:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:46,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:46,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:46,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873803530] [2021-12-19 15:24:46,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873803530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:46,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104324079] [2021-12-19 15:24:46,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:24:46,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:46,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:46,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 15:24:46,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:24:46,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:46,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-19 15:24:46,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:48,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:49,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104324079] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:49,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:49,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 48, 48] total 127 [2021-12-19 15:24:49,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801207154] [2021-12-19 15:24:49,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:49,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-12-19 15:24:49,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-12-19 15:24:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2961, Invalid=13295, Unknown=0, NotChecked=0, Total=16256 [2021-12-19 15:24:49,451 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 128 states, 127 states have (on average 1.8503937007874016) internal successors, (235), 128 states have internal predecessors, (235), 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) [2021-12-19 15:24:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:54,033 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2021-12-19 15:24:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-19 15:24:54,033 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.8503937007874016) internal successors, (235), 128 states have internal predecessors, (235), 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 80 [2021-12-19 15:24:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:54,035 INFO L225 Difference]: With dead ends: 173 [2021-12-19 15:24:54,035 INFO L226 Difference]: Without dead ends: 170 [2021-12-19 15:24:54,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14744 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7329, Invalid=27453, Unknown=0, NotChecked=0, Total=34782 [2021-12-19 15:24:54,040 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 757 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:54,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 60 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-19 15:24:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-19 15:24:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 162. [2021-12-19 15:24:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0625) internal successors, (170), 161 states have internal predecessors, (170), 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) [2021-12-19 15:24:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2021-12-19 15:24:54,047 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 80 [2021-12-19 15:24:54,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:54,047 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2021-12-19 15:24:54,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.8503937007874016) internal successors, (235), 128 states have internal predecessors, (235), 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) [2021-12-19 15:24:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2021-12-19 15:24:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-19 15:24:54,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:54,048 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-19 15:24:54,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:54,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-19 15:24:54,255 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 4 times [2021-12-19 15:24:54,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:54,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137407887] [2021-12-19 15:24:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:54,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:54,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137407887] [2021-12-19 15:24:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137407887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463971630] [2021-12-19 15:24:54,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:24:54,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:54,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:54,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:54,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 15:24:54,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:24:54,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:54,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-19 15:24:54,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:54,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463971630] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:55,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:55,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-19 15:24:55,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889343723] [2021-12-19 15:24:55,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:55,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-19 15:24:55,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-19 15:24:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 15:24:55,411 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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) [2021-12-19 15:24:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:24:55,548 INFO L93 Difference]: Finished difference Result 271 states and 294 transitions. [2021-12-19 15:24:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-19 15:24:55,549 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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 117 [2021-12-19 15:24:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:24:55,550 INFO L225 Difference]: With dead ends: 271 [2021-12-19 15:24:55,550 INFO L226 Difference]: Without dead ends: 270 [2021-12-19 15:24:55,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 15:24:55,551 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 108 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:24:55,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 127 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:24:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-19 15:24:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 240. [2021-12-19 15:24:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 238 states have (on average 1.0714285714285714) internal successors, (255), 239 states have internal predecessors, (255), 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) [2021-12-19 15:24:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 255 transitions. [2021-12-19 15:24:55,556 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 255 transitions. Word has length 117 [2021-12-19 15:24:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:24:55,556 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 255 transitions. [2021-12-19 15:24:55,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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) [2021-12-19 15:24:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 255 transitions. [2021-12-19 15:24:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-19 15:24:55,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:24:55,557 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-12-19 15:24:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 15:24:55,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 15:24:55,758 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:24:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:24:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash -994311234, now seen corresponding path program 5 times [2021-12-19 15:24:55,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:24:55,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545541224] [2021-12-19 15:24:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:24:55,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:24:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:24:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:56,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:24:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545541224] [2021-12-19 15:24:56,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545541224] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:24:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022058801] [2021-12-19 15:24:56,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:24:56,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:24:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:24:56,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:24:56,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 15:24:56,812 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-12-19 15:24:56,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:24:56,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 97 conjunts are in the unsatisfiable core [2021-12-19 15:24:56,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:24:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:59,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:25:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022058801] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:25:04,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:25:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 96, 96] total 255 [2021-12-19 15:25:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988512024] [2021-12-19 15:25:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:25:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2021-12-19 15:25:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:25:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2021-12-19 15:25:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11305, Invalid=53975, Unknown=0, NotChecked=0, Total=65280 [2021-12-19 15:25:04,089 INFO L87 Difference]: Start difference. First operand 240 states and 255 transitions. Second operand has 256 states, 255 states have (on average 1.8627450980392157) internal successors, (475), 256 states have internal predecessors, (475), 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) [2021-12-19 15:25:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:25:26,475 INFO L93 Difference]: Finished difference Result 341 states and 372 transitions. [2021-12-19 15:25:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-19 15:25:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 1.8627450980392157) internal successors, (475), 256 states have internal predecessors, (475), 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 160 [2021-12-19 15:25:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:25:26,476 INFO L225 Difference]: With dead ends: 341 [2021-12-19 15:25:26,477 INFO L226 Difference]: Without dead ends: 338 [2021-12-19 15:25:26,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62464 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=29273, Invalid=113989, Unknown=0, NotChecked=0, Total=143262 [2021-12-19 15:25:26,484 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 3021 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10353 mSolverCounterSat, 2813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 13166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2813 IncrementalHoareTripleChecker+Valid, 10353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:25:26,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3021 Valid, 126 Invalid, 13166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2813 Valid, 10353 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-19 15:25:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-19 15:25:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 322. [2021-12-19 15:25:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 320 states have (on average 1.05625) internal successors, (338), 321 states have internal predecessors, (338), 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) [2021-12-19 15:25:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 338 transitions. [2021-12-19 15:25:26,498 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 338 transitions. Word has length 160 [2021-12-19 15:25:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:25:26,499 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 338 transitions. [2021-12-19 15:25:26,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 1.8627450980392157) internal successors, (475), 256 states have internal predecessors, (475), 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) [2021-12-19 15:25:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 338 transitions. [2021-12-19 15:25:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-19 15:25:26,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:25:26,503 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-19 15:25:26,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-19 15:25:26,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-19 15:25:26,719 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:25:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:25:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 5 times [2021-12-19 15:25:26,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:25:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451330008] [2021-12-19 15:25:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:25:26,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:25:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:25:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:25:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451330008] [2021-12-19 15:25:27,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451330008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:25:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202368109] [2021-12-19 15:25:27,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:25:27,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:25:27,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:25:27,543 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:25:27,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 15:25:27,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 15:25:27,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:25:27,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-19 15:25:27,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:25:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:27,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:25:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:29,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202368109] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:25:29,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:25:29,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-19 15:25:29,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263092324] [2021-12-19 15:25:29,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:25:29,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-19 15:25:29,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:25:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-19 15:25:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 15:25:29,330 INFO L87 Difference]: Start difference. First operand 322 states and 338 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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) [2021-12-19 15:25:29,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:25:29,586 INFO L93 Difference]: Finished difference Result 543 states and 590 transitions. [2021-12-19 15:25:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-19 15:25:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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 237 [2021-12-19 15:25:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:25:29,588 INFO L225 Difference]: With dead ends: 543 [2021-12-19 15:25:29,588 INFO L226 Difference]: Without dead ends: 542 [2021-12-19 15:25:29,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 15:25:29,589 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 308 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:25:29,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 233 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:25:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-19 15:25:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 480. [2021-12-19 15:25:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 478 states have (on average 1.0690376569037656) internal successors, (511), 479 states have internal predecessors, (511), 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) [2021-12-19 15:25:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 511 transitions. [2021-12-19 15:25:29,600 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 511 transitions. Word has length 237 [2021-12-19 15:25:29,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:25:29,601 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 511 transitions. [2021-12-19 15:25:29,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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) [2021-12-19 15:25:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 511 transitions. [2021-12-19 15:25:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-19 15:25:29,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:25:29,603 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-12-19 15:25:29,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 15:25:29,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:25:29,824 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:25:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:25:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298178, now seen corresponding path program 6 times [2021-12-19 15:25:29,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:25:29,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567242805] [2021-12-19 15:25:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:25:29,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:25:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:25:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:34,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:25:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567242805] [2021-12-19 15:25:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567242805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:25:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651083191] [2021-12-19 15:25:34,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:25:34,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:25:34,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:25:34,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:25:34,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 15:25:34,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-12-19 15:25:34,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:25:34,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 193 conjunts are in the unsatisfiable core [2021-12-19 15:25:34,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:25:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:42,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:25:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:25:59,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651083191] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:25:59,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:25:59,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 192, 192] total 511 [2021-12-19 15:25:59,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106620049] [2021-12-19 15:25:59,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:25:59,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2021-12-19 15:25:59,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:25:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2021-12-19 15:25:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44121, Invalid=217511, Unknown=0, NotChecked=0, Total=261632 [2021-12-19 15:25:59,298 INFO L87 Difference]: Start difference. First operand 480 states and 511 transitions. Second operand has 512 states, 511 states have (on average 1.8688845401174168) internal successors, (955), 512 states have internal predecessors, (955), 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) [2021-12-19 15:28:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:28:20,358 INFO L93 Difference]: Finished difference Result 677 states and 740 transitions. [2021-12-19 15:28:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-12-19 15:28:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 1.8688845401174168) internal successors, (955), 512 states have internal predecessors, (955), 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 320 [2021-12-19 15:28:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:28:20,361 INFO L225 Difference]: With dead ends: 677 [2021-12-19 15:28:20,361 INFO L226 Difference]: Without dead ends: 674 [2021-12-19 15:28:20,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256976 ImplicationChecksByTransitivity, 154.7s TimeCoverageRelationStatistics Valid=116937, Invalid=464469, Unknown=0, NotChecked=0, Total=581406 [2021-12-19 15:28:20,385 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 10434 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 33675 mSolverCounterSat, 12357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10434 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 46032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12357 IncrementalHoareTripleChecker+Valid, 33675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:28:20,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10434 Valid, 214 Invalid, 46032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12357 Valid, 33675 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2021-12-19 15:28:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-12-19 15:28:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 642. [2021-12-19 15:28:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 640 states have (on average 1.053125) internal successors, (674), 641 states have internal predecessors, (674), 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) [2021-12-19 15:28:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 674 transitions. [2021-12-19 15:28:20,429 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 674 transitions. Word has length 320 [2021-12-19 15:28:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:28:20,430 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 674 transitions. [2021-12-19 15:28:20,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 1.8688845401174168) internal successors, (955), 512 states have internal predecessors, (955), 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) [2021-12-19 15:28:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 674 transitions. [2021-12-19 15:28:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-12-19 15:28:20,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:28:20,435 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2021-12-19 15:28:20,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-19 15:28:20,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-19 15:28:20,649 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:28:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:28:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1616701657, now seen corresponding path program 6 times [2021-12-19 15:28:20,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:28:20,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765264336] [2021-12-19 15:28:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:28:20,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:28:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:28:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:23,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:28:23,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765264336] [2021-12-19 15:28:23,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765264336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:28:23,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099665307] [2021-12-19 15:28:23,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:28:23,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:28:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:28:23,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:28:23,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 15:28:23,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 15:28:23,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:28:23,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-19 15:28:23,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:28:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:24,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:28:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:31,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099665307] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:28:31,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:28:31,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-19 15:28:31,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590968526] [2021-12-19 15:28:31,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:28:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-19 15:28:31,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:28:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-19 15:28:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 15:28:31,524 INFO L87 Difference]: Start difference. First operand 642 states and 674 transitions. Second operand has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 192 states have internal predecessors, (952), 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) [2021-12-19 15:28:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:28:32,531 INFO L93 Difference]: Finished difference Result 1087 states and 1182 transitions. [2021-12-19 15:28:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-19 15:28:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 192 states have internal predecessors, (952), 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 477 [2021-12-19 15:28:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:28:32,535 INFO L225 Difference]: With dead ends: 1087 [2021-12-19 15:28:32,535 INFO L226 Difference]: Without dead ends: 1086 [2021-12-19 15:28:32,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 15:28:32,536 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 739 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:28:32,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 462 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:28:32,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-12-19 15:28:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 960. [2021-12-19 15:28:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 958 states have (on average 1.067849686847599) internal successors, (1023), 959 states have internal predecessors, (1023), 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) [2021-12-19 15:28:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1023 transitions. [2021-12-19 15:28:32,566 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1023 transitions. Word has length 477 [2021-12-19 15:28:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:28:32,567 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1023 transitions. [2021-12-19 15:28:32,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.984293193717278) internal successors, (952), 192 states have internal predecessors, (952), 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) [2021-12-19 15:28:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1023 transitions. [2021-12-19 15:28:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-12-19 15:28:32,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:28:32,572 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2021-12-19 15:28:32,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-19 15:28:32,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:28:32,788 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 15:28:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:28:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash -877126722, now seen corresponding path program 7 times [2021-12-19 15:28:32,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:28:32,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571717847] [2021-12-19 15:28:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:28:32,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:28:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:28:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:28:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:28:50,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571717847] [2021-12-19 15:28:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571717847] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:28:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396728724] [2021-12-19 15:28:50,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:28:50,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:28:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:28:50,078 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:28:50,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 15:28:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:28:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 385 conjunts are in the unsatisfiable core [2021-12-19 15:28:50,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:29:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:29:27,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:30:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:30:36,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396728724] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:30:36,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:30:36,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 384, 384] total 1023 [2021-12-19 15:30:36,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093392490] [2021-12-19 15:30:36,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:30:36,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 1024 states [2021-12-19 15:30:36,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:30:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1024 interpolants. [2021-12-19 15:30:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174265, Invalid=873287, Unknown=0, NotChecked=0, Total=1047552 [2021-12-19 15:30:36,391 INFO L87 Difference]: Start difference. First operand 960 states and 1023 transitions. Second operand has 1024 states, 1023 states have (on average 1.8719452590420331) internal successors, (1915), 1024 states have internal predecessors, (1915), 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) Killed by 15