./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark34_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 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:49:03,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:49:03,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:49:03,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:49:03,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:49:03,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:49:03,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:49:03,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:49:03,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:49:03,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:49:03,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:49:03,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:49:03,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:49:03,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:49:03,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:49:03,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:49:03,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:49:03,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:49:03,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:49:03,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:49:03,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:49:03,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:49:03,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:49:03,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:49:03,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:49:03,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:49:03,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:49:03,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:49:03,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:49:03,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:49:03,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:49:03,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:49:03,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:49:03,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:49:03,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:49:03,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:49:03,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:49:03,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:49:03,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:49:03,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:49:03,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:49:03,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-28 08:49:03,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:49:03,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:49:03,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:49:03,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:49:03,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:49:03,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:49:03,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:49:03,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:49:03,244 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:49:03,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:49:03,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:49:03,245 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:49:03,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:49:03,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:49:03,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:49:03,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:49:03,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:49:03,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:49:03,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:49:03,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:49:03,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:49:03,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2021-12-28 08:49:03,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:49:03,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:49:03,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:49:03,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:49:03,539 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:49:03,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-12-28 08:49:03,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ccb7e55/5e5310a3239646c0ae9064b583b20d1d/FLAG6995ca74a [2021-12-28 08:49:03,924 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:49:03,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-12-28 08:49:03,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ccb7e55/5e5310a3239646c0ae9064b583b20d1d/FLAG6995ca74a [2021-12-28 08:49:03,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ccb7e55/5e5310a3239646c0ae9064b583b20d1d [2021-12-28 08:49:03,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:49:03,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:49:03,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:49:03,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:49:03,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:49:03,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:49:03" (1/1) ... [2021-12-28 08:49:03,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251e350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:03, skipping insertion in model container [2021-12-28 08:49:03,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:49:03" (1/1) ... [2021-12-28 08:49:03,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:49:03,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:49:04,060 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/benchmark34_conjunctive.i[873,886] [2021-12-28 08:49:04,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:49:04,073 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:49:04,082 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/benchmark34_conjunctive.i[873,886] [2021-12-28 08:49:04,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:49:04,098 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:49:04,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04 WrapperNode [2021-12-28 08:49:04,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:49:04,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:49:04,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:49:04,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:49:04,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,148 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-12-28 08:49:04,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:49:04,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:49:04,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:49:04,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:49:04,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:49:04,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:49:04,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:49:04,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:49:04,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (1/1) ... [2021-12-28 08:49:04,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:49:04,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:04,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 08:49:04,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 08:49:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 08:49:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 08:49:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:49:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:49:04,260 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:49:04,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:49:04,371 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:49:04,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:49:04,391 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 08:49:04,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:49:04 BoogieIcfgContainer [2021-12-28 08:49:04,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:49:04,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:49:04,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:49:04,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:49:04,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:49:03" (1/3) ... [2021-12-28 08:49:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ff0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:49:04, skipping insertion in model container [2021-12-28 08:49:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:49:04" (2/3) ... [2021-12-28 08:49:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ff0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:49:04, skipping insertion in model container [2021-12-28 08:49:04,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:49:04" (3/3) ... [2021-12-28 08:49:04,397 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-12-28 08:49:04,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:49:04,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 08:49:04,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:49:04,432 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 08:49:04,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 08:49:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-28 08:49:04,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:04,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-28 08:49:04,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-28 08:49:04,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:04,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676972313] [2021-12-28 08:49:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:04,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:04,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676972313] [2021-12-28 08:49:04,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676972313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:49:04,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:49:04,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:49:04,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361100199] [2021-12-28 08:49:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:49:04,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:49:04,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:49:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:49:04,617 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:04,660 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-28 08:49:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:49:04,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-28 08:49:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:04,670 INFO L225 Difference]: With dead ends: 35 [2021-12-28 08:49:04,670 INFO L226 Difference]: Without dead ends: 16 [2021-12-28 08:49:04,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:49:04,681 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:04,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-28 08:49:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-28 08:49:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-28 08:49:04,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-12-28 08:49:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:04,703 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-28 08:49:04,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-28 08:49:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 08:49:04,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:04,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 08:49:04,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:49:04,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-28 08:49:04,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:04,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587702630] [2021-12-28 08:49:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:04,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:04,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587702630] [2021-12-28 08:49:04,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587702630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:49:04,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:49:04,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:49:04,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214210689] [2021-12-28 08:49:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:49:04,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:49:04,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:49:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:49:04,762 INFO L87 Difference]: Start difference. First operand 14 states and 14 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) [2021-12-28 08:49:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:04,779 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-28 08:49:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:49:04,780 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 [2021-12-28 08:49:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:04,781 INFO L225 Difference]: With dead ends: 14 [2021-12-28 08:49:04,781 INFO L226 Difference]: Without dead ends: 13 [2021-12-28 08:49:04,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:49:04,786 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:04,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-28 08:49:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-28 08:49:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-28 08:49:04,792 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-12-28 08:49:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:04,793 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-28 08:49:04,793 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) [2021-12-28 08:49:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-28 08:49:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 08:49:04,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:04,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:49:04,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:49:04,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-28 08:49:04,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:04,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439911556] [2021-12-28 08:49:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:04,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:04,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439911556] [2021-12-28 08:49:04,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439911556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:49:04,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:49:04,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:49:04,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372372734] [2021-12-28 08:49:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:49:04,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:49:04,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:49:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:49:04,854 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-12-28 08:49:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:04,865 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-12-28 08:49:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:49:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-12-28 08:49:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:04,866 INFO L225 Difference]: With dead ends: 13 [2021-12-28 08:49:04,866 INFO L226 Difference]: Without dead ends: 12 [2021-12-28 08:49:04,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:49:04,868 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:04,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-28 08:49:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-28 08:49:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-28 08:49:04,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-12-28 08:49:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:04,871 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-28 08:49:04,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-12-28 08:49:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-28 08:49:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 08:49:04,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:04,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:49:04,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:49:04,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-28 08:49:04,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:04,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258790780] [2021-12-28 08:49:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:04,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:04,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258790780] [2021-12-28 08:49:04,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258790780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:49:04,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:49:04,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:49:04,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276998076] [2021-12-28 08:49:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:49:04,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:49:04,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:49:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:49:04,898 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-28 08:49:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:04,917 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-28 08:49:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:49:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-12-28 08:49:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:04,919 INFO L225 Difference]: With dead ends: 16 [2021-12-28 08:49:04,919 INFO L226 Difference]: Without dead ends: 15 [2021-12-28 08:49:04,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:49:04,920 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:04,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-28 08:49:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-28 08:49:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-28 08:49:04,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-12-28 08:49:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:04,923 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-28 08:49:04,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-28 08:49:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-28 08:49:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:49:04,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:04,924 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:49:04,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:49:04,924 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-28 08:49:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614797725] [2021-12-28 08:49:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:04,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:04,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614797725] [2021-12-28 08:49:04,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614797725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:04,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910841530] [2021-12-28 08:49:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:04,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:04,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:04,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:49:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:05,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 08:49:05,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:05,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:05,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910841530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:05,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:05,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-28 08:49:05,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288801487] [2021-12-28 08:49:05,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:05,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 08:49:05,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 08:49:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:49:05,100 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:05,151 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-28 08:49:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 08:49:05,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) Word has length 10 [2021-12-28 08:49:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:05,152 INFO L225 Difference]: With dead ends: 31 [2021-12-28 08:49:05,152 INFO L226 Difference]: Without dead ends: 30 [2021-12-28 08:49:05,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-28 08:49:05,153 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:05,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-28 08:49:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-12-28 08:49:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-28 08:49:05,156 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-12-28 08:49:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:05,157 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-28 08:49:05,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-28 08:49:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-28 08:49:05,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:05,158 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-28 08:49:05,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 08:49:05,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:05,374 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2021-12-28 08:49:05,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:05,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625066449] [2021-12-28 08:49:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:05,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:05,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:05,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625066449] [2021-12-28 08:49:05,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625066449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:05,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927614321] [2021-12-28 08:49:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:05,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:05,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:05,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 08:49:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:05,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 08:49:05,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:05,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:05,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927614321] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:05,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:05,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-12-28 08:49:05,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945245603] [2021-12-28 08:49:05,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:05,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 08:49:05,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 08:49:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-12-28 08:49:05,678 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:05,838 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-12-28 08:49:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 08:49:05,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 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 13 [2021-12-28 08:49:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:05,839 INFO L225 Difference]: With dead ends: 37 [2021-12-28 08:49:05,839 INFO L226 Difference]: Without dead ends: 36 [2021-12-28 08:49:05,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-12-28 08:49:05,840 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:05,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-28 08:49:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-28 08:49:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 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) [2021-12-28 08:49:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-12-28 08:49:05,844 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 13 [2021-12-28 08:49:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:05,844 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-12-28 08:49:05,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-12-28 08:49:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 08:49:05,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:05,845 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-28 08:49:05,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 08:49:06,082 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,SelfDestructingSolverStorable5 [2021-12-28 08:49:06,083 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-12-28 08:49:06,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879166537] [2021-12-28 08:49:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:06,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:06,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:06,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879166537] [2021-12-28 08:49:06,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879166537] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:06,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851129200] [2021-12-28 08:49:06,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:49:06,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:06,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:06,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:06,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 08:49:06,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 08:49:06,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:49:06,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 08:49:06,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 08:49:06,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 08:49:06,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851129200] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:06,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:06,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2021-12-28 08:49:06,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357536080] [2021-12-28 08:49:06,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:06,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 08:49:06,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 08:49:06,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-28 08:49:06,300 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:06,430 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-12-28 08:49:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 08:49:06,431 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 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 25 [2021-12-28 08:49:06,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:06,432 INFO L225 Difference]: With dead ends: 35 [2021-12-28 08:49:06,432 INFO L226 Difference]: Without dead ends: 34 [2021-12-28 08:49:06,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-12-28 08:49:06,433 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:06,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:49:06,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-28 08:49:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-28 08:49:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-12-28 08:49:06,437 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2021-12-28 08:49:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:06,437 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-12-28 08:49:06,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-12-28 08:49:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-28 08:49:06,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:06,438 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1] [2021-12-28 08:49:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 08:49:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:06,654 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -445508829, now seen corresponding path program 2 times [2021-12-28 08:49:06,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:06,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709674633] [2021-12-28 08:49:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:06,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:06,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:06,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709674633] [2021-12-28 08:49:06,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709674633] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883499721] [2021-12-28 08:49:06,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:49:06,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:06,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:06,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:06,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 08:49:06,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:49:06,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:49:06,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-28 08:49:06,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:07,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:07,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883499721] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:07,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:07,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 47 [2021-12-28 08:49:07,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272502511] [2021-12-28 08:49:07,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:07,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-28 08:49:07,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:07,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-28 08:49:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1938, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 08:49:07,802 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 48 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 48 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:09,033 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-12-28 08:49:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-28 08:49:09,034 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 48 states have internal predecessors, (92), 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 33 [2021-12-28 08:49:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:09,034 INFO L225 Difference]: With dead ends: 95 [2021-12-28 08:49:09,035 INFO L226 Difference]: Without dead ends: 94 [2021-12-28 08:49:09,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1511, Invalid=5799, Unknown=0, NotChecked=0, Total=7310 [2021-12-28 08:49:09,037 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 226 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:09,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 69 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:49:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-28 08:49:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-28 08:49:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-12-28 08:49:09,044 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 33 [2021-12-28 08:49:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:09,044 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-12-28 08:49:09,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 48 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-12-28 08:49:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 08:49:09,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:09,046 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 1, 1, 1, 1] [2021-12-28 08:49:09,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-28 08:49:09,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:09,262 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1594871773, now seen corresponding path program 3 times [2021-12-28 08:49:09,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:09,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310849271] [2021-12-28 08:49:09,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:09,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:09,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:09,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310849271] [2021-12-28 08:49:09,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310849271] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:09,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838623486] [2021-12-28 08:49:09,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:49:09,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:09,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:09,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 08:49:09,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-12-28 08:49:09,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:49:09,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-28 08:49:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:10,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:11,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838623486] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:11,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:11,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 41, 41] total 87 [2021-12-28 08:49:11,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318690143] [2021-12-28 08:49:11,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:11,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-12-28 08:49:11,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-12-28 08:49:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=6212, Unknown=0, NotChecked=0, Total=7656 [2021-12-28 08:49:11,419 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 88 states, 87 states have (on average 2.32183908045977) internal successors, (202), 88 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:49:12,854 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2021-12-28 08:49:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-12-28 08:49:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.32183908045977) internal successors, (202), 88 states have internal predecessors, (202), 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 93 [2021-12-28 08:49:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:49:12,860 INFO L225 Difference]: With dead ends: 205 [2021-12-28 08:49:12,860 INFO L226 Difference]: Without dead ends: 204 [2021-12-28 08:49:12,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4139 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4686, Invalid=15054, Unknown=0, NotChecked=0, Total=19740 [2021-12-28 08:49:12,865 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 430 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:49:12,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 113 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:49:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-28 08:49:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-12-28 08:49:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0049261083743843) internal successors, (204), 203 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-12-28 08:49:12,881 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 93 [2021-12-28 08:49:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:49:12,883 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-12-28 08:49:12,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.32183908045977) internal successors, (202), 88 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:49:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-12-28 08:49:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-28 08:49:12,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:49:12,890 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 1, 1, 1, 1] [2021-12-28 08:49:12,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 08:49:13,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:13,103 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:49:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:49:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -465818973, now seen corresponding path program 4 times [2021-12-28 08:49:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:49:13,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502489621] [2021-12-28 08:49:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:49:13,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:49:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:49:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:14,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:49:14,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502489621] [2021-12-28 08:49:14,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502489621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:49:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994133983] [2021-12-28 08:49:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:49:14,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:49:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:49:14,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:49:14,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 08:49:14,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:49:14,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:49:14,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 161 conjunts are in the unsatisfiable core [2021-12-28 08:49:14,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:49:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:24,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:49:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:49:37,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994133983] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:49:37,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:49:37,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 121, 121] total 319 [2021-12-28 08:49:37,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096138479] [2021-12-28 08:49:37,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:49:37,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 320 states [2021-12-28 08:49:37,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:49:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2021-12-28 08:49:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11640, Invalid=90440, Unknown=0, NotChecked=0, Total=102080 [2021-12-28 08:49:37,796 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 320 states, 319 states have (on average 1.8871473354231976) internal successors, (602), 320 states have internal predecessors, (602), 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)