./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 791161d1 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-?-791161d [2022-07-23 13:39:10,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:39:10,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:39:10,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:39:10,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:39:10,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:39:10,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:39:10,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:39:10,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:39:10,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:39:10,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:39:10,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:39:10,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:39:10,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:39:10,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:39:10,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:39:10,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:39:10,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:39:10,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:39:10,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:39:10,935 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:39:10,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:39:10,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:39:10,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:39:10,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:39:10,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:39:10,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:39:10,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:39:10,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:39:10,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:39:10,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:39:10,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:39:10,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:39:10,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:39:10,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:39:10,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:39:10,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:39:10,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:39:10,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:39:10,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:39:10,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:39:10,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:39:10,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:39:10,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:39:10,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:39:10,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:39:10,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:39:10,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:39:10,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:39:10,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:39:10,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:39:10,985 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:39:10,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:39:10,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:39:10,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:39:10,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:39:10,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:39:10,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:39:10,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:39:10,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:39:10,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:39:10,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:39:10,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:39:10,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:39:10,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:39:10,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:39:10,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2022-07-23 13:39:11,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:39:11,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:39:11,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:39:11,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:39:11,205 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:39:11,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2022-07-23 13:39:11,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507a500eb/8ee06f79a4b944ec895258823a5874ec/FLAG5d3056d0a [2022-07-23 13:39:11,556 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:39:11,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2022-07-23 13:39:11,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507a500eb/8ee06f79a4b944ec895258823a5874ec/FLAG5d3056d0a [2022-07-23 13:39:11,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507a500eb/8ee06f79a4b944ec895258823a5874ec [2022-07-23 13:39:11,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:39:11,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:39:11,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:39:11,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:39:11,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:39:11,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:39:11" (1/1) ... [2022-07-23 13:39:12,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec41aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12, skipping insertion in model container [2022-07-23 13:39:12,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:39:11" (1/1) ... [2022-07-23 13:39:12,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:39:12,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:39:12,130 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] [2022-07-23 13:39:12,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:39:12,157 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:39:12,166 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] [2022-07-23 13:39:12,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:39:12,180 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:39:12,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12 WrapperNode [2022-07-23 13:39:12,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:39:12,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:39:12,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:39:12,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:39:12,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,208 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-07-23 13:39:12,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:39:12,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:39:12,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:39:12,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:39:12,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:39:12,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:39:12,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:39:12,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:39:12,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (1/1) ... [2022-07-23 13:39:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:39:12,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:12,275 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) [2022-07-23 13:39:12,277 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 [2022-07-23 13:39:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:39:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:39:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:39:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:39:12,359 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:39:12,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:39:12,511 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:39:12,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:39:12,516 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 13:39:12,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:39:12 BoogieIcfgContainer [2022-07-23 13:39:12,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:39:12,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:39:12,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:39:12,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:39:12,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:39:11" (1/3) ... [2022-07-23 13:39:12,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b845c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:39:12, skipping insertion in model container [2022-07-23 13:39:12,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:39:12" (2/3) ... [2022-07-23 13:39:12,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b845c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:39:12, skipping insertion in model container [2022-07-23 13:39:12,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:39:12" (3/3) ... [2022-07-23 13:39:12,523 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2022-07-23 13:39:12,534 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:39:12,534 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-23 13:39:12,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:39:12,616 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fcfa5c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19dcac1e [2022-07-23 13:39:12,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-23 13:39:12,619 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) [2022-07-23 13:39:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:39:12,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:12,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:39:12,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2022-07-23 13:39:12,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:12,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685272244] [2022-07-23 13:39:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:12,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:12,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685272244] [2022-07-23 13:39:12,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685272244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:39:12,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:39:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:39:12,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810834016] [2022-07-23 13:39:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:39:12,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:39:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:39:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:39:12,870 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) [2022-07-23 13:39:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:12,923 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-23 13:39:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:39:12,925 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 [2022-07-23 13:39:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:12,931 INFO L225 Difference]: With dead ends: 35 [2022-07-23 13:39:12,931 INFO L226 Difference]: Without dead ends: 16 [2022-07-23 13:39:12,938 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:39:12,945 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:12,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-23 13:39:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-07-23 13:39:12,969 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) [2022-07-23 13:39:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-23 13:39:12,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2022-07-23 13:39:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:12,971 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-23 13:39:12,972 INFO L496 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) [2022-07-23 13:39:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-23 13:39:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:39:12,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:12,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:39:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:39:12,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2022-07-23 13:39:12,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:12,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114547909] [2022-07-23 13:39:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:13,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114547909] [2022-07-23 13:39:13,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114547909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:39:13,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:39:13,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:39:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574060632] [2022-07-23 13:39:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:39:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:39:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:39:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:39:13,028 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) [2022-07-23 13:39:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:13,047 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-23 13:39:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:39:13,048 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 [2022-07-23 13:39:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:13,048 INFO L225 Difference]: With dead ends: 14 [2022-07-23 13:39:13,049 INFO L226 Difference]: Without dead ends: 13 [2022-07-23 13:39:13,052 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:39:13,054 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:13,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-23 13:39:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-23 13:39:13,067 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) [2022-07-23 13:39:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-07-23 13:39:13,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2022-07-23 13:39:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:13,069 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-07-23 13:39:13,069 INFO L496 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) [2022-07-23 13:39:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-07-23 13:39:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:39:13,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:13,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:39:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:39:13,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2022-07-23 13:39:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:13,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401801937] [2022-07-23 13:39:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401801937] [2022-07-23 13:39:13,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401801937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:39:13,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:39:13,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:39:13,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409273890] [2022-07-23 13:39:13,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:39:13,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:39:13,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:13,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:39:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:39:13,103 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) [2022-07-23 13:39:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:13,120 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-07-23 13:39:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:39:13,121 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 [2022-07-23 13:39:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:13,121 INFO L225 Difference]: With dead ends: 13 [2022-07-23 13:39:13,121 INFO L226 Difference]: Without dead ends: 12 [2022-07-23 13:39:13,122 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:39:13,122 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:13,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-23 13:39:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-23 13:39:13,125 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) [2022-07-23 13:39:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-23 13:39:13,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2022-07-23 13:39:13,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:13,125 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-23 13:39:13,127 INFO L496 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) [2022-07-23 13:39:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-23 13:39:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:39:13,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:13,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:39:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:39:13,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2022-07-23 13:39:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:13,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659061454] [2022-07-23 13:39:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:13,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659061454] [2022-07-23 13:39:13,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659061454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:39:13,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:39:13,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:39:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103511474] [2022-07-23 13:39:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:39:13,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:39:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:39:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:39:13,162 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) [2022-07-23 13:39:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:13,178 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-23 13:39:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:39:13,179 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 [2022-07-23 13:39:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:13,179 INFO L225 Difference]: With dead ends: 16 [2022-07-23 13:39:13,179 INFO L226 Difference]: Without dead ends: 15 [2022-07-23 13:39:13,180 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:39:13,180 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-23 13:39:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-23 13:39:13,183 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) [2022-07-23 13:39:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-07-23 13:39:13,183 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-07-23 13:39:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:13,184 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-07-23 13:39:13,184 INFO L496 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) [2022-07-23 13:39:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-07-23 13:39:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 13:39:13,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:13,185 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:39:13,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:39:13,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2022-07-23 13:39:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397948950] [2022-07-23 13:39:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:13,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397948950] [2022-07-23 13:39:13,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397948950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:13,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319319686] [2022-07-23 13:39:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:13,233 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) [2022-07-23 13:39:13,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:39:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:39:13,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319319686] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:13,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:13,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-23 13:39:13,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131599824] [2022-07-23 13:39:13,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:13,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 13:39:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 13:39:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-23 13:39:13,368 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) [2022-07-23 13:39:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:13,415 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-07-23 13:39:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:39:13,416 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 [2022-07-23 13:39:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:13,416 INFO L225 Difference]: With dead ends: 31 [2022-07-23 13:39:13,416 INFO L226 Difference]: Without dead ends: 30 [2022-07-23 13:39:13,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:39:13,418 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:13,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-23 13:39:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-07-23 13:39:13,421 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) [2022-07-23 13:39:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-07-23 13:39:13,421 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2022-07-23 13:39:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:13,422 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-07-23 13:39:13,422 INFO L496 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) [2022-07-23 13:39:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-07-23 13:39:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 13:39:13,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:13,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-23 13:39:13,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:39:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:13,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2022-07-23 13:39:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460518418] [2022-07-23 13:39:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:13,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460518418] [2022-07-23 13:39:13,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460518418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:13,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347347409] [2022-07-23 13:39:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:13,677 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) [2022-07-23 13:39:13,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:39:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:13,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:39:13,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:13,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347347409] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:13,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:13,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-07-23 13:39:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801955089] [2022-07-23 13:39:13,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-23 13:39:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-23 13:39:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-23 13:39:13,889 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) [2022-07-23 13:39:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:14,057 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-07-23 13:39:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 13:39:14,057 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 [2022-07-23 13:39:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:14,058 INFO L225 Difference]: With dead ends: 37 [2022-07-23 13:39:14,058 INFO L226 Difference]: Without dead ends: 36 [2022-07-23 13:39:14,059 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:39:14,059 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-23 13:39:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-07-23 13:39:14,063 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) [2022-07-23 13:39:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-07-23 13:39:14,064 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 13 [2022-07-23 13:39:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:14,064 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-07-23 13:39:14,064 INFO L496 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) [2022-07-23 13:39:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-07-23 13:39:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 13:39:14,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:14,065 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-07-23 13:39:14,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 13:39:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-23 13:39:14,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2022-07-23 13:39:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:14,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494654413] [2022-07-23 13:39:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494654413] [2022-07-23 13:39:14,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494654413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870781679] [2022-07-23 13:39:14,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:39:14,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:14,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:14,416 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) [2022-07-23 13:39:14,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:39:14,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:39:14,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:39:14,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:39:14,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-23 13:39:14,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-23 13:39:14,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870781679] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:14,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:14,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-07-23 13:39:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915415246] [2022-07-23 13:39:14,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:14,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 13:39:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 13:39:14,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:39:14,534 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) [2022-07-23 13:39:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:14,652 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-07-23 13:39:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 13:39:14,653 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 [2022-07-23 13:39:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:14,654 INFO L225 Difference]: With dead ends: 35 [2022-07-23 13:39:14,654 INFO L226 Difference]: Without dead ends: 34 [2022-07-23 13:39:14,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2022-07-23 13:39:14,655 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:14,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:39:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-23 13:39:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-23 13:39:14,658 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) [2022-07-23 13:39:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-07-23 13:39:14,659 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2022-07-23 13:39:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:14,659 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-07-23 13:39:14,659 INFO L496 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) [2022-07-23 13:39:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-07-23 13:39:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 13:39:14,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:14,660 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1] [2022-07-23 13:39:14,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:39:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:14,882 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -445508829, now seen corresponding path program 2 times [2022-07-23 13:39:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:14,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123058376] [2022-07-23 13:39:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:14,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123058376] [2022-07-23 13:39:14,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123058376] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:14,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667442526] [2022-07-23 13:39:14,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:39:14,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:14,982 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) [2022-07-23 13:39:14,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:39:15,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:39:15,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:39:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 13:39:15,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:15,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:15,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667442526] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:15,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:15,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 47 [2022-07-23 13:39:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817791353] [2022-07-23 13:39:15,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-23 13:39:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-23 13:39:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1938, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:39:15,845 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) [2022-07-23 13:39:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:17,111 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2022-07-23 13:39:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-23 13:39:17,112 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 [2022-07-23 13:39:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:17,113 INFO L225 Difference]: With dead ends: 95 [2022-07-23 13:39:17,113 INFO L226 Difference]: Without dead ends: 94 [2022-07-23 13:39:17,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1511, Invalid=5799, Unknown=0, NotChecked=0, Total=7310 [2022-07-23 13:39:17,115 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:17,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 69 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:39:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-23 13:39:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-07-23 13:39:17,122 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) [2022-07-23 13:39:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2022-07-23 13:39:17,123 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 33 [2022-07-23 13:39:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2022-07-23 13:39:17,124 INFO L496 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) [2022-07-23 13:39:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2022-07-23 13:39:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-23 13:39:17,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:17,136 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 1, 1, 1, 1] [2022-07-23 13:39:17,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:39:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:17,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1594871773, now seen corresponding path program 3 times [2022-07-23 13:39:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:17,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949852632] [2022-07-23 13:39:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:17,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:17,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949852632] [2022-07-23 13:39:17,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949852632] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:17,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328661592] [2022-07-23 13:39:17,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:39:17,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:17,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:17,864 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) [2022-07-23 13:39:17,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:39:17,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-07-23 13:39:17,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:39:17,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-23 13:39:17,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:18,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328661592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:19,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:19,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 41, 41] total 87 [2022-07-23 13:39:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800902440] [2022-07-23 13:39:19,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:19,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-07-23 13:39:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-07-23 13:39:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=6212, Unknown=0, NotChecked=0, Total=7656 [2022-07-23 13:39:19,196 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) [2022-07-23 13:39:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:39:20,798 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2022-07-23 13:39:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-07-23 13:39:20,798 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 [2022-07-23 13:39:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:39:20,799 INFO L225 Difference]: With dead ends: 205 [2022-07-23 13:39:20,800 INFO L226 Difference]: Without dead ends: 204 [2022-07-23 13:39:20,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4139 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4686, Invalid=15054, Unknown=0, NotChecked=0, Total=19740 [2022-07-23 13:39:20,804 INFO L413 NwaCegarLoop]: 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 [2022-07-23 13:39:20,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 113 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:39:20,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-23 13:39:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-07-23 13:39:20,819 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) [2022-07-23 13:39:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2022-07-23 13:39:20,823 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 93 [2022-07-23 13:39:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:39:20,823 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2022-07-23 13:39:20,823 INFO L496 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) [2022-07-23 13:39:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2022-07-23 13:39:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-23 13:39:20,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:39:20,832 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 1, 1, 1, 1] [2022-07-23 13:39:20,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:39:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:21,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:39:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:39:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash -465818973, now seen corresponding path program 4 times [2022-07-23 13:39:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:39:21,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674945447] [2022-07-23 13:39:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:39:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:39:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:39:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:39:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674945447] [2022-07-23 13:39:22,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674945447] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:39:22,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491542033] [2022-07-23 13:39:22,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:39:22,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:39:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:39:22,478 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) [2022-07-23 13:39:22,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:39:22,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:39:22,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:39:22,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-23 13:39:22,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:39:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:30,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:39:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 0 proven. 3900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:39:45,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491542033] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:39:45,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:39:45,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 121, 121] total 319 [2022-07-23 13:39:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794535808] [2022-07-23 13:39:45,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:39:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 320 states [2022-07-23 13:39:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:39:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2022-07-23 13:39:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11640, Invalid=90440, Unknown=0, NotChecked=0, Total=102080 [2022-07-23 13:39:45,382 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) [2022-07-23 13:41:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:41:12,168 INFO L93 Difference]: Finished difference Result 605 states and 684 transitions. [2022-07-23 13:41:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2022-07-23 13:41:12,169 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 203 [2022-07-23 13:41:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:41:12,176 INFO L225 Difference]: With dead ends: 605 [2022-07-23 13:41:12,176 INFO L226 Difference]: Without dead ends: 604 [2022-07-23 13:41:12,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 594 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71687 ImplicationChecksByTransitivity, 100.3s TimeCoverageRelationStatistics Valid=66570, Invalid=288050, Unknown=0, NotChecked=0, Total=354620 [2022-07-23 13:41:12,221 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7898 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 24521 mSolverCounterSat, 4541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7898 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 29062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4541 IncrementalHoareTripleChecker+Valid, 24521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:41:12,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7898 Valid, 372 Invalid, 29062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4541 Valid, 24521 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-23 13:41:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-23 13:41:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-07-23 13:41:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 1.0016583747927033) internal successors, (604), 603 states have internal predecessors, (604), 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) [2022-07-23 13:41:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 604 transitions. [2022-07-23 13:41:12,290 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 604 transitions. Word has length 203 [2022-07-23 13:41:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:41:12,291 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 604 transitions. [2022-07-23 13:41:12,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-23 13:41:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 604 transitions. [2022-07-23 13:41:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-07-23 13:41:12,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:41:12,297 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 119, 1, 1, 1, 1] [2022-07-23 13:41:12,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-23 13:41:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:41:12,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-23 13:41:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:41:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 675387043, now seen corresponding path program 5 times [2022-07-23 13:41:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:41:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749970371] [2022-07-23 13:41:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:41:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:41:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:41:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35700 backedges. 0 proven. 35700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:41:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:41:22,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749970371] [2022-07-23 13:41:22,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749970371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:41:22,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784506978] [2022-07-23 13:41:22,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:41:22,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:41:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:41:22,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:41:22,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:41:22,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2022-07-23 13:41:22,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:41:22,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 481 conjunts are in the unsatisfiable core [2022-07-23 13:41:22,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 35700 backedges. 0 proven. 35700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:20,303 INFO L328 TraceCheckSpWp]: Computing backward predicates...