./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 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/goblint-regression/09-regions_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:05:29,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:05:29,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:05:29,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:05:29,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:05:29,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:05:29,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:05:29,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:05:29,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:05:29,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:05:29,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:05:29,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:05:29,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:05:29,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:05:29,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:05:29,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:05:29,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:05:29,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:05:29,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:05:29,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:05:29,069 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:05:29,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:05:29,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:05:29,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:05:29,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:05:29,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:05:29,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:05:29,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:05:29,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:05:29,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:05:29,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:05:29,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:05:29,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:05:29,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:05:29,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:05:29,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:05:29,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:05:29,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:05:29,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:05:29,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:05:29,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:05:29,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:05:29,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:05:29,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:05:29,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:05:29,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:05:29,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:05:29,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:05:29,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:05:29,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:05:29,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:05:29,110 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:05:29,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:05:29,111 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:05:29,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:05:29,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:05:29,112 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:05:29,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:05:29,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:05:29,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:05:29,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:05:29,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:05:29,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:05:29,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:05:29,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:29,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:05:29,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:05:29,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:05:29,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:05:29,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:05:29,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:05:29,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-07-14 14:05:29,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:05:29,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:05:29,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:05:29,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:05:29,284 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:05:29,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-07-14 14:05:29,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9949c59f/1c4abe01b2414887914286eea6d0838d/FLAG9c7ef67ea [2022-07-14 14:05:29,746 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:05:29,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-07-14 14:05:29,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9949c59f/1c4abe01b2414887914286eea6d0838d/FLAG9c7ef67ea [2022-07-14 14:05:29,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9949c59f/1c4abe01b2414887914286eea6d0838d [2022-07-14 14:05:29,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:05:29,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:05:29,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:29,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:05:29,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:05:29,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:29" (1/1) ... [2022-07-14 14:05:29,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3828f6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:29, skipping insertion in model container [2022-07-14 14:05:29,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:29" (1/1) ... [2022-07-14 14:05:29,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:05:29,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:05:30,119 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,120 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,120 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,120 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:30,156 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:05:30,197 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,197 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,197 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,197 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:30,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:30,233 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:05:30,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30 WrapperNode [2022-07-14 14:05:30,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:30,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:30,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:05:30,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:05:30,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,274 INFO L137 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-07-14 14:05:30,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:30,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:05:30,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:05:30,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:05:30,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:05:30,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:05:30,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:05:30,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:05:30,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (1/1) ... [2022-07-14 14:05:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:05:30,329 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) [2022-07-14 14:05:30,331 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 [2022-07-14 14:05:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-14 14:05:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 14:05:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:05:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 14:05:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:05:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:05:30,364 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:05:30,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:05:30,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:05:30,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:05:30,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:05:30,676 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-14 14:05:30,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:30 BoogieIcfgContainer [2022-07-14 14:05:30,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:05:30,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:05:30,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:05:30,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:05:30,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:05:29" (1/3) ... [2022-07-14 14:05:30,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e09a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:30, skipping insertion in model container [2022-07-14 14:05:30,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:30" (2/3) ... [2022-07-14 14:05:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e09a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:30, skipping insertion in model container [2022-07-14 14:05:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:30" (3/3) ... [2022-07-14 14:05:30,684 INFO L111 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-07-14 14:05:30,687 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:05:30,693 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:05:30,693 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-14 14:05:30,694 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:05:30,746 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:05:30,769 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:05:30,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 217 transitions, 444 flow [2022-07-14 14:05:30,786 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 217 transitions, 444 flow [2022-07-14 14:05:30,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-07-14 14:05:30,845 INFO L129 PetriNetUnfolder]: 15/215 cut-off events. [2022-07-14 14:05:30,846 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:05:30,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 515 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-07-14 14:05:30,859 INFO L116 LiptonReduction]: Number of co-enabled transitions 7600 [2022-07-14 14:05:59,649 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:13,048 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:18,767 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:31,204 WARN L233 SmtUtils]: Spent 12.43s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:36,705 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:46,446 WARN L233 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:52,728 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-14 14:06:52,784 INFO L131 LiptonReduction]: Checked pairs total: 7893 [2022-07-14 14:06:52,784 INFO L133 LiptonReduction]: Total number of compositions: 229 [2022-07-14 14:06:52,789 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-07-14 14:06:52,817 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-07-14 14:06:52,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:06:52,832 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@11b9507f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b31fe39 [2022-07-14 14:06:52,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-07-14 14:06:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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) [2022-07-14 14:06:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:06:52,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:52,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:06:52,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash 729588, now seen corresponding path program 1 times [2022-07-14 14:06:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:52,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331221928] [2022-07-14 14:06:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:52,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:52,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329350355] [2022-07-14 14:06:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:52,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:52,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:52,934 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) [2022-07-14 14:06:52,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:06:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:53,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:53,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:06:53,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331221928] [2022-07-14 14:06:53,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329350355] [2022-07-14 14:06:53,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329350355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:53,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:53,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:06:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764936573] [2022-07-14 14:06:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:53,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:53,073 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-14 14:06:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:53,346 INFO L93 Difference]: Finished difference Result 273 states and 705 transitions. [2022-07-14 14:06:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-07-14 14:06:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:53,356 INFO L225 Difference]: With dead ends: 273 [2022-07-14 14:06:53,356 INFO L226 Difference]: Without dead ends: 273 [2022-07-14 14:06:53,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:53,358 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:53,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 14:06:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-14 14:06:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-07-14 14:06:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 244 states have (on average 2.889344262295082) internal successors, (705), 272 states have internal predecessors, (705), 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) [2022-07-14 14:06:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 705 transitions. [2022-07-14 14:06:53,449 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 705 transitions. Word has length 3 [2022-07-14 14:06:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:53,451 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 705 transitions. [2022-07-14 14:06:53,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-14 14:06:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 705 transitions. [2022-07-14 14:06:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:06:53,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:53,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:06:53,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 14:06:53,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-14 14:06:53,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 729736, now seen corresponding path program 1 times [2022-07-14 14:06:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:53,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229112413] [2022-07-14 14:06:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:53,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:53,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699032423] [2022-07-14 14:06:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:53,723 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) [2022-07-14 14:06:53,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 14:06:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:53,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:53,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:06:53,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:53,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:53,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229112413] [2022-07-14 14:06:53,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:53,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699032423] [2022-07-14 14:06:53,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699032423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:53,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:53,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:06:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508838155] [2022-07-14 14:06:53,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:53,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:53,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:53,857 INFO L87 Difference]: Start difference. First operand 273 states and 705 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-14 14:06:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:53,946 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2022-07-14 14:06:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:53,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-07-14 14:06:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:53,949 INFO L225 Difference]: With dead ends: 272 [2022-07-14 14:06:53,949 INFO L226 Difference]: Without dead ends: 272 [2022-07-14 14:06:53,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:53,950 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:53,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:06:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-14 14:06:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-07-14 14:06:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8811475409836067) internal successors, (703), 271 states have internal predecessors, (703), 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) [2022-07-14 14:06:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2022-07-14 14:06:53,966 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 3 [2022-07-14 14:06:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:53,966 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2022-07-14 14:06:53,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-14 14:06:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2022-07-14 14:06:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:06:53,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:53,967 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-07-14 14:06:53,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 14:06:54,175 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,SelfDestructingSolverStorable1 [2022-07-14 14:06:54,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 701243811, now seen corresponding path program 1 times [2022-07-14 14:06:54,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432166025] [2022-07-14 14:06:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:54,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988550063] [2022-07-14 14:06:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:54,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:54,208 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) [2022-07-14 14:06:54,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 14:06:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:54,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:06:54,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:06:54,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:54,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432166025] [2022-07-14 14:06:54,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988550063] [2022-07-14 14:06:54,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988550063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:54,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:54,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:06:54,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430769206] [2022-07-14 14:06:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:54,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:54,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:54,290 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-07-14 14:06:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:54,455 INFO L93 Difference]: Finished difference Result 276 states and 707 transitions. [2022-07-14 14:06:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-07-14 14:06:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:54,457 INFO L225 Difference]: With dead ends: 276 [2022-07-14 14:06:54,457 INFO L226 Difference]: Without dead ends: 276 [2022-07-14 14:06:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:54,458 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:06:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-14 14:06:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-07-14 14:06:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.8739837398373984) internal successors, (707), 273 states have internal predecessors, (707), 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) [2022-07-14 14:06:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 707 transitions. [2022-07-14 14:06:54,467 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 707 transitions. Word has length 5 [2022-07-14 14:06:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:54,467 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 707 transitions. [2022-07-14 14:06:54,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-07-14 14:06:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 707 transitions. [2022-07-14 14:06:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:06:54,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:54,468 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:06:54,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 14:06:54,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:54,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:54,685 INFO L85 PathProgramCache]: Analyzing trace with hash 265407351, now seen corresponding path program 1 times [2022-07-14 14:06:54,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:54,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971480624] [2022-07-14 14:06:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:54,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:54,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835160202] [2022-07-14 14:06:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:54,714 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) [2022-07-14 14:06:54,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 14:06:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:54,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:54,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:06:54,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:06:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:06:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971480624] [2022-07-14 14:06:54,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835160202] [2022-07-14 14:06:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835160202] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:06:54,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:06:54,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-14 14:06:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764214972] [2022-07-14 14:06:54,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:06:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:06:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:06:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:06:54,874 INFO L87 Difference]: Start difference. First operand 274 states and 707 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:06:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:55,103 INFO L93 Difference]: Finished difference Result 286 states and 719 transitions. [2022-07-14 14:06:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:06:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 14:06:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:55,105 INFO L225 Difference]: With dead ends: 286 [2022-07-14 14:06:55,105 INFO L226 Difference]: Without dead ends: 286 [2022-07-14 14:06:55,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:06:55,106 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:55,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:06:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-14 14:06:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2022-07-14 14:06:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8531746031746033) internal successors, (719), 279 states have internal predecessors, (719), 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) [2022-07-14 14:06:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 719 transitions. [2022-07-14 14:06:55,115 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 719 transitions. Word has length 6 [2022-07-14 14:06:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:55,115 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 719 transitions. [2022-07-14 14:06:55,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:06:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 719 transitions. [2022-07-14 14:06:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:06:55,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:55,116 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-07-14 14:06:55,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 14:06:55,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1389491875, now seen corresponding path program 2 times [2022-07-14 14:06:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:55,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320404764] [2022-07-14 14:06:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:55,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:55,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133346881] [2022-07-14 14:06:55,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:06:55,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:55,368 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) [2022-07-14 14:06:55,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 14:06:55,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 14:06:55,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:06:55,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-14 14:06:55,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320404764] [2022-07-14 14:06:55,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133346881] [2022-07-14 14:06:55,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133346881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:55,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:55,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:06:55,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929102855] [2022-07-14 14:06:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:55,516 INFO L87 Difference]: Start difference. First operand 280 states and 719 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-14 14:06:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:55,735 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-07-14 14:06:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2022-07-14 14:06:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:55,737 INFO L225 Difference]: With dead ends: 280 [2022-07-14 14:06:55,737 INFO L226 Difference]: Without dead ends: 280 [2022-07-14 14:06:55,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:55,738 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:55,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:06:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-14 14:06:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-14 14:06:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 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) [2022-07-14 14:06:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-07-14 14:06:55,745 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 9 [2022-07-14 14:06:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:55,745 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-07-14 14:06:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-07-14 14:06:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-07-14 14:06:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:06:55,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:55,745 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-14 14:06:55,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 14:06:55,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash 124580345, now seen corresponding path program 3 times [2022-07-14 14:06:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:55,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831640736] [2022-07-14 14:06:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:55,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:56,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:56,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884509472] [2022-07-14 14:06:56,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:06:56,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:56,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:56,010 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) [2022-07-14 14:06:56,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 14:06:56,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 14:06:56,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:06:56,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:06:56,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-14 14:06:56,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 1 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-14 14:07:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:00,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831640736] [2022-07-14 14:07:00,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:00,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884509472] [2022-07-14 14:07:00,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884509472] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:00,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:00,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2022-07-14 14:07:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749822628] [2022-07-14 14:07:00,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:07:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:07:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2022-07-14 14:07:00,620 INFO L87 Difference]: Start difference. First operand 280 states and 717 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-14 14:07:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:00,848 INFO L93 Difference]: Finished difference Result 286 states and 724 transitions. [2022-07-14 14:07:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:07:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) Word has length 10 [2022-07-14 14:07:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:00,850 INFO L225 Difference]: With dead ends: 286 [2022-07-14 14:07:00,850 INFO L226 Difference]: Without dead ends: 286 [2022-07-14 14:07:00,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2022-07-14 14:07:00,850 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:00,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-07-14 14:07:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-14 14:07:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2022-07-14 14:07:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 258 states have (on average 2.806201550387597) internal successors, (724), 284 states have internal predecessors, (724), 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) [2022-07-14 14:07:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 724 transitions. [2022-07-14 14:07:00,856 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 724 transitions. Word has length 10 [2022-07-14 14:07:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:00,856 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 724 transitions. [2022-07-14 14:07:00,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-14 14:07:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 724 transitions. [2022-07-14 14:07:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:07:00,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:00,857 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-14 14:07:00,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:01,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:01,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 124580400, now seen corresponding path program 1 times [2022-07-14 14:07:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585321706] [2022-07-14 14:07:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:01,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:01,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094515844] [2022-07-14 14:07:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:01,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:01,107 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) [2022-07-14 14:07:01,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 14:07:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:01,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:07:01,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:01,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:01,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585321706] [2022-07-14 14:07:01,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:01,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094515844] [2022-07-14 14:07:01,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094515844] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:01,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:01,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-14 14:07:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439962524] [2022-07-14 14:07:01,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 14:07:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:07:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:07:01,522 INFO L87 Difference]: Start difference. First operand 285 states and 724 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-14 14:07:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:02,054 INFO L93 Difference]: Finished difference Result 311 states and 754 transitions. [2022-07-14 14:07:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:07:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 [2022-07-14 14:07:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:02,055 INFO L225 Difference]: With dead ends: 311 [2022-07-14 14:07:02,055 INFO L226 Difference]: Without dead ends: 311 [2022-07-14 14:07:02,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:07:02,056 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:02,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 14:07:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-14 14:07:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 303. [2022-07-14 14:07:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 276 states have (on average 2.7318840579710146) internal successors, (754), 302 states have internal predecessors, (754), 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) [2022-07-14 14:07:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 754 transitions. [2022-07-14 14:07:02,073 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 754 transitions. Word has length 10 [2022-07-14 14:07:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:02,073 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 754 transitions. [2022-07-14 14:07:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-14 14:07:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 754 transitions. [2022-07-14 14:07:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 14:07:02,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:02,074 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-07-14 14:07:02,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:02,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:02,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 889770672, now seen corresponding path program 2 times [2022-07-14 14:07:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:02,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474180332] [2022-07-14 14:07:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:02,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:02,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170297259] [2022-07-14 14:07:02,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:02,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:02,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 14:07:02,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:07:02,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:02,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 14:07:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:03,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:07:03,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474180332] [2022-07-14 14:07:03,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:03,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170297259] [2022-07-14 14:07:03,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170297259] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:03,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:03,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-14 14:07:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972130948] [2022-07-14 14:07:03,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 14:07:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 14:07:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 14:07:03,209 INFO L87 Difference]: Start difference. First operand 303 states and 754 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:04,576 INFO L93 Difference]: Finished difference Result 359 states and 814 transitions. [2022-07-14 14:07:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 14:07:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-14 14:07:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:04,578 INFO L225 Difference]: With dead ends: 359 [2022-07-14 14:07:04,578 INFO L226 Difference]: Without dead ends: 359 [2022-07-14 14:07:04,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 14:07:04,579 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 47 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:04,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 5 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 14:07:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-14 14:07:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 339. [2022-07-14 14:07:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 312 states have (on average 2.608974358974359) internal successors, (814), 338 states have internal predecessors, (814), 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) [2022-07-14 14:07:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 814 transitions. [2022-07-14 14:07:04,585 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 814 transitions. Word has length 16 [2022-07-14 14:07:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:04,585 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 814 transitions. [2022-07-14 14:07:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 814 transitions. [2022-07-14 14:07:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 14:07:04,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:04,586 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-07-14 14:07:04,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-14 14:07:04,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash -307661904, now seen corresponding path program 3 times [2022-07-14 14:07:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393717132] [2022-07-14 14:07:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:04,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:04,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:04,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867935144] [2022-07-14 14:07:04,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:07:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:04,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:04,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 14:07:05,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 14:07:05,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:07:05,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-14 14:07:05,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:05,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393717132] [2022-07-14 14:07:05,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:05,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867935144] [2022-07-14 14:07:05,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867935144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:05,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:05,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:07:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794241562] [2022-07-14 14:07:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:07:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:07:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:07:05,680 INFO L87 Difference]: Start difference. First operand 339 states and 814 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-07-14 14:07:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:05,916 INFO L93 Difference]: Finished difference Result 337 states and 769 transitions. [2022-07-14 14:07:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:07:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 28 [2022-07-14 14:07:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:05,918 INFO L225 Difference]: With dead ends: 337 [2022-07-14 14:07:05,918 INFO L226 Difference]: Without dead ends: 337 [2022-07-14 14:07:05,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:07:05,919 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:05,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:07:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-14 14:07:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-07-14 14:07:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 312 states have (on average 2.46474358974359) internal successors, (769), 336 states have internal predecessors, (769), 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) [2022-07-14 14:07:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 769 transitions. [2022-07-14 14:07:05,925 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 769 transitions. Word has length 28 [2022-07-14 14:07:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:05,925 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 769 transitions. [2022-07-14 14:07:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-07-14 14:07:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 769 transitions. [2022-07-14 14:07:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 14:07:05,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:05,927 INFO L195 NwaCegarLoop]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:05,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:06,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 155762737, now seen corresponding path program 1 times [2022-07-14 14:07:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17100300] [2022-07-14 14:07:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:06,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:06,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764430446] [2022-07-14 14:07:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:06,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:06,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:06,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 14:07:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 10497 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 14:07:08,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-14 14:07:09,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-14 14:07:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:09,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17100300] [2022-07-14 14:07:09,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:09,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764430446] [2022-07-14 14:07:09,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764430446] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:09,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:09,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-07-14 14:07:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860993212] [2022-07-14 14:07:09,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-14 14:07:09,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-14 14:07:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-14 14:07:09,365 INFO L87 Difference]: Start difference. First operand 337 states and 769 transitions. Second operand has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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) [2022-07-14 14:07:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:10,791 INFO L93 Difference]: Finished difference Result 361 states and 793 transitions. [2022-07-14 14:07:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 14:07:10,791 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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 55 [2022-07-14 14:07:10,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:10,793 INFO L225 Difference]: With dead ends: 361 [2022-07-14 14:07:10,793 INFO L226 Difference]: Without dead ends: 361 [2022-07-14 14:07:10,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-14 14:07:10,794 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:10,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 14:07:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-07-14 14:07:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-07-14 14:07:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 336 states have (on average 2.3601190476190474) internal successors, (793), 360 states have internal predecessors, (793), 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) [2022-07-14 14:07:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 793 transitions. [2022-07-14 14:07:10,803 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 793 transitions. Word has length 55 [2022-07-14 14:07:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:10,804 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 793 transitions. [2022-07-14 14:07:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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) [2022-07-14 14:07:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 793 transitions. [2022-07-14 14:07:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-14 14:07:10,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:10,808 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:10,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:11,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 14:07:11,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash -450628303, now seen corresponding path program 2 times [2022-07-14 14:07:11,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:11,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491515864] [2022-07-14 14:07:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:11,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058381511] [2022-07-14 14:07:11,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:11,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:11,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:11,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:11,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 14:07:13,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 14:07:13,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:13,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:07:13,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2022-07-14 14:07:13,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:07:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491515864] [2022-07-14 14:07:13,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058381511] [2022-07-14 14:07:13,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058381511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:07:13,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:07:13,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:07:13,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51344144] [2022-07-14 14:07:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:13,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:07:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:07:13,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:13,366 INFO L87 Difference]: Start difference. First operand 361 states and 793 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:13,569 INFO L93 Difference]: Finished difference Result 337 states and 732 transitions. [2022-07-14 14:07:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:07:13,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-14 14:07:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:13,571 INFO L225 Difference]: With dead ends: 337 [2022-07-14 14:07:13,571 INFO L226 Difference]: Without dead ends: 337 [2022-07-14 14:07:13,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:07:13,572 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:13,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:07:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-14 14:07:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-07-14 14:07:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 317 states have (on average 2.309148264984227) internal successors, (732), 336 states have internal predecessors, (732), 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) [2022-07-14 14:07:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 732 transitions. [2022-07-14 14:07:13,578 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 732 transitions. Word has length 71 [2022-07-14 14:07:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:13,579 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 732 transitions. [2022-07-14 14:07:13,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 732 transitions. [2022-07-14 14:07:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-14 14:07:13,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:13,580 INFO L195 NwaCegarLoop]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:13,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:13,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-14 14:07:13,784 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash -450628316, now seen corresponding path program 1 times [2022-07-14 14:07:13,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:13,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364317890] [2022-07-14 14:07:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:14,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:14,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235946997] [2022-07-14 14:07:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:14,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:14,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:14,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 14:07:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:18,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 14236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:07:18,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-07-14 14:07:18,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-07-14 14:07:18,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364317890] [2022-07-14 14:07:18,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:18,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235946997] [2022-07-14 14:07:18,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235946997] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:18,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:18,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-14 14:07:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595229248] [2022-07-14 14:07:18,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:18,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 14:07:18,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:18,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 14:07:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:07:18,173 INFO L87 Difference]: Start difference. First operand 337 states and 732 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 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) [2022-07-14 14:07:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:18,580 INFO L93 Difference]: Finished difference Result 433 states and 831 transitions. [2022-07-14 14:07:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 14:07:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-14 14:07:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:18,582 INFO L225 Difference]: With dead ends: 433 [2022-07-14 14:07:18,582 INFO L226 Difference]: Without dead ends: 433 [2022-07-14 14:07:18,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:07:18,583 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:18,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:07:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-14 14:07:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-07-14 14:07:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 414 states have (on average 2.0072463768115942) internal successors, (831), 432 states have internal predecessors, (831), 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) [2022-07-14 14:07:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 831 transitions. [2022-07-14 14:07:18,590 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 831 transitions. Word has length 71 [2022-07-14 14:07:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:18,591 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 831 transitions. [2022-07-14 14:07:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 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) [2022-07-14 14:07:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 831 transitions. [2022-07-14 14:07:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-14 14:07:18,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:18,593 INFO L195 NwaCegarLoop]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:18,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-14 14:07:18,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2062048288, now seen corresponding path program 2 times [2022-07-14 14:07:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276278073] [2022-07-14 14:07:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:20,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:20,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520034687] [2022-07-14 14:07:20,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:20,077 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:20,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 14:07:29,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:07:29,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:29,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 42476 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:07:29,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-07-14 14:07:30,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-07-14 14:07:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276278073] [2022-07-14 14:07:30,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520034687] [2022-07-14 14:07:30,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520034687] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:30,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:30,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-07-14 14:07:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891804881] [2022-07-14 14:07:30,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 14:07:30,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:07:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:07:30,499 INFO L87 Difference]: Start difference. First operand 433 states and 831 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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) [2022-07-14 14:07:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:31,210 INFO L93 Difference]: Finished difference Result 561 states and 963 transitions. [2022-07-14 14:07:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:07:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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) Word has length 199 [2022-07-14 14:07:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:31,213 INFO L225 Difference]: With dead ends: 561 [2022-07-14 14:07:31,213 INFO L226 Difference]: Without dead ends: 561 [2022-07-14 14:07:31,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:07:31,214 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:31,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 14:07:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-14 14:07:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-07-14 14:07:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 542 states have (on average 1.7767527675276753) internal successors, (963), 560 states have internal predecessors, (963), 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) [2022-07-14 14:07:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 963 transitions. [2022-07-14 14:07:31,223 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 963 transitions. Word has length 199 [2022-07-14 14:07:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:31,224 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 963 transitions. [2022-07-14 14:07:31,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 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) [2022-07-14 14:07:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 963 transitions. [2022-07-14 14:07:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-14 14:07:31,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:31,226 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:31,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 14:07:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 14:07:31,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash -60583268, now seen corresponding path program 3 times [2022-07-14 14:07:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:31,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119379104] [2022-07-14 14:07:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:33,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:33,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222903649] [2022-07-14 14:07:33,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:07:33,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:33,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:07:33,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process