./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.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_24-evilcollapse_nr.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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:05:46,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:05:46,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:05:46,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:05:46,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:05:46,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:05:46,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:05:46,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:05:46,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:05:46,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:05:46,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:05:46,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:05:46,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:05:46,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:05:46,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:05:46,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:05:46,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:05:46,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:05:46,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:05:46,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:05:46,239 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:05:46,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:05:46,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:05:46,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:05:46,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:05:46,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:05:46,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:05:46,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:05:46,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:05:46,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:05:46,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:05:46,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:05:46,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:05:46,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:05:46,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:05:46,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:05:46,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:05:46,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:05:46,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:05:46,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:05:46,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:05:46,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:05:46,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:05:46,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:05:46,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:05:46,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:05:46,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:05:46,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:05:46,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:05:46,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:05:46,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:05:46,282 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:05:46,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:05:46,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:05:46,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:05:46,284 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:05:46,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:05:46,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:05:46,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:05:46,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:05:46,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:05:46,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:05:46,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:05:46,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:46,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:05:46,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:05:46,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:05:46,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:05:46,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:05:46,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:05:46,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-07-14 14:05:46,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:05:46,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:05:46,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:05:46,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:05:46,535 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:05:46,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-07-14 14:05:46,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c471938f8/471df47571c34e609865c600baef2ba2/FLAG3e48f6a5f [2022-07-14 14:05:47,014 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:05:47,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-07-14 14:05:47,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c471938f8/471df47571c34e609865c600baef2ba2/FLAG3e48f6a5f [2022-07-14 14:05:47,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c471938f8/471df47571c34e609865c600baef2ba2 [2022-07-14 14:05:47,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:05:47,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:05:47,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:47,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:05:47,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:05:47,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202d8484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47, skipping insertion in model container [2022-07-14 14:05:47,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:05:47,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:05:47,412 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,412 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,413 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,413 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:47,446 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:05:47,468 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,468 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,468 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,468 WARN L1550 CHandler]: Possible shadowing of function new [2022-07-14 14:05:47,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:47,516 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:05:47,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47 WrapperNode [2022-07-14 14:05:47,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:47,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:47,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:05:47,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:05:47,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,576 INFO L137 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-07-14 14:05:47,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:47,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:05:47,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:05:47,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:05:47,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:05:47,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:05:47,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:05:47,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:05:47,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (1/1) ... [2022-07-14 14:05:47,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:47,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:05:47,630 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 14:05:47,664 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 14:05:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-14 14:05:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-14 14:05:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:05:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 14:05:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:05:47,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:05:47,702 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 14:05:47,836 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:05:47,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:05:48,114 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:05:48,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:05:48,120 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-14 14:05:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:48 BoogieIcfgContainer [2022-07-14 14:05:48,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:05:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:05:48,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:05:48,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:05:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:05:47" (1/3) ... [2022-07-14 14:05:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d8dfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:48, skipping insertion in model container [2022-07-14 14:05:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:47" (2/3) ... [2022-07-14 14:05:48,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d8dfde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:48, skipping insertion in model container [2022-07-14 14:05:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:48" (3/3) ... [2022-07-14 14:05:48,130 INFO L111 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-07-14 14:05:48,133 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:05:48,139 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:05:48,140 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-14 14:05:48,140 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:05:48,215 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:05:48,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:05:48,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 259 transitions, 528 flow [2022-07-14 14:05:48,256 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 259 transitions, 528 flow [2022-07-14 14:05:48,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-07-14 14:05:48,378 INFO L129 PetriNetUnfolder]: 17/257 cut-off events. [2022-07-14 14:05:48,378 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:05:48,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 585 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-07-14 14:05:48,391 INFO L116 LiptonReduction]: Number of co-enabled transitions 7600 [2022-07-14 14:06:05,718 WARN L233 SmtUtils]: Spent 8.44s 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 14:06:10,920 WARN L233 SmtUtils]: Spent 5.20s 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 14:06:19,053 WARN L233 SmtUtils]: Spent 8.13s 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 14:06:32,025 WARN L233 SmtUtils]: Spent 8.55s 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 14:06:37,624 WARN L233 SmtUtils]: Spent 5.60s 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 14:06:46,775 WARN L233 SmtUtils]: Spent 9.15s 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 14:06:51,968 WARN L233 SmtUtils]: Spent 5.19s 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 14:06:52,143 INFO L131 LiptonReduction]: Checked pairs total: 7897 [2022-07-14 14:06:52,143 INFO L133 LiptonReduction]: Total number of compositions: 285 [2022-07-14 14:06:52,148 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-07-14 14:06:52,171 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 14:06:52,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:06:52,191 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@6b184901, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@542388a4 [2022-07-14 14:06:52,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-07-14 14:06:52,193 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 14:06:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:06:52,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:52,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:06:52,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash 869823, now seen corresponding path program 1 times [2022-07-14 14:06:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683831799] [2022-07-14 14:06:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:52,391 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 14:06:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:52,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683831799] [2022-07-14 14:06:52,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683831799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:52,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:52,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:06:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113828702] [2022-07-14 14:06:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:52,419 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 14:06:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:52,587 INFO L93 Difference]: Finished difference Result 270 states and 700 transitions. [2022-07-14 14:06:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:52,592 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 14:06:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:52,615 INFO L225 Difference]: With dead ends: 270 [2022-07-14 14:06:52,615 INFO L226 Difference]: Without dead ends: 270 [2022-07-14 14:06:52,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 14:06:52,622 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:52,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:06:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-14 14:06:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-07-14 14:06:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 242 states have (on average 2.8925619834710745) internal successors, (700), 269 states have internal predecessors, (700), 0 states have call successors, (0), 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 14:06:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 700 transitions. [2022-07-14 14:06:52,663 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 700 transitions. Word has length 3 [2022-07-14 14:06:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:52,664 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 700 transitions. [2022-07-14 14:06:52,664 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 14:06:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 700 transitions. [2022-07-14 14:06:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:06:52,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:52,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:06:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:06:52,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash 869840, now seen corresponding path program 1 times [2022-07-14 14:06:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:52,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439765704] [2022-07-14 14:06:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:52,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837378532] [2022-07-14 14:06:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:52,685 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 14:06:52,711 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 14:06:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:52,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:52,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:52,798 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 14:06:52,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:52,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439765704] [2022-07-14 14:06:52,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:52,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837378532] [2022-07-14 14:06:52,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837378532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:52,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:52,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:06:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851851507] [2022-07-14 14:06:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:52,801 INFO L87 Difference]: Start difference. First operand 270 states and 700 transitions. 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 14:06:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:53,169 INFO L93 Difference]: Finished difference Result 272 states and 704 transitions. [2022-07-14 14:06:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:53,169 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 14:06:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:53,172 INFO L225 Difference]: With dead ends: 272 [2022-07-14 14:06:53,173 INFO L226 Difference]: Without dead ends: 272 [2022-07-14 14:06:53,173 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 14:06:53,174 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:53,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:06:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-14 14:06:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-07-14 14:06:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 244 states have (on average 2.8852459016393444) internal successors, (704), 271 states have internal predecessors, (704), 0 states have call successors, (0), 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 14:06:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 704 transitions. [2022-07-14 14:06:53,187 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 704 transitions. Word has length 3 [2022-07-14 14:06:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:53,188 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 704 transitions. [2022-07-14 14:06:53,188 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 14:06:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 704 transitions. [2022-07-14 14:06:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:06:53,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:53,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:06:53,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 14:06:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:53,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 869938, now seen corresponding path program 1 times [2022-07-14 14:06:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958031621] [2022-07-14 14:06:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:53,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407887338] [2022-07-14 14:06:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:53,449 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 14:06:53,450 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 14:06:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:53,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:53,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:53,568 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 14:06:53,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:53,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958031621] [2022-07-14 14:06:53,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407887338] [2022-07-14 14:06:53,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407887338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:53,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:53,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:06:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168371301] [2022-07-14 14:06:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:53,574 INFO L87 Difference]: Start difference. First operand 272 states and 704 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 14:06:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:53,652 INFO L93 Difference]: Finished difference Result 271 states and 702 transitions. [2022-07-14 14:06:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:53,653 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 14:06:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:53,654 INFO L225 Difference]: With dead ends: 271 [2022-07-14 14:06:53,654 INFO L226 Difference]: Without dead ends: 271 [2022-07-14 14:06:53,654 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 14:06:53,655 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 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 14:06:53,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:06:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-14 14:06:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-07-14 14:06:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 244 states have (on average 2.877049180327869) internal successors, (702), 270 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 14:06:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 702 transitions. [2022-07-14 14:06:53,673 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 702 transitions. Word has length 3 [2022-07-14 14:06:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:53,673 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 702 transitions. [2022-07-14 14:06:53,674 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 14:06:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 702 transitions. [2022-07-14 14:06:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:06:53,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:53,674 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-07-14 14:06:53,693 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 14:06:53,883 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,SelfDestructingSolverStorable2 [2022-07-14 14:06:53,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 835980762, now seen corresponding path program 1 times [2022-07-14 14:06:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921954785] [2022-07-14 14:06:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:53,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:53,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451014524] [2022-07-14 14:06:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:53,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:53,935 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 14:06:53,937 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 14:06:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:54,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:06:54,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:54,021 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 14:06:54,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:54,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:54,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921954785] [2022-07-14 14:06:54,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:54,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451014524] [2022-07-14 14:06:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451014524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:54,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:54,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:06:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863974925] [2022-07-14 14:06:54,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:54,024 INFO L87 Difference]: Start difference. First operand 271 states and 702 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 14:06:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:54,158 INFO L93 Difference]: Finished difference Result 275 states and 706 transitions. [2022-07-14 14:06:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:54,159 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 14:06:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:54,160 INFO L225 Difference]: With dead ends: 275 [2022-07-14 14:06:54,160 INFO L226 Difference]: Without dead ends: 275 [2022-07-14 14:06:54,160 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 14:06:54,161 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:54,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:06:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-14 14:06:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2022-07-14 14:06:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 2.869918699186992) internal successors, (706), 272 states have internal predecessors, (706), 0 states have call successors, (0), 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 14:06:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 706 transitions. [2022-07-14 14:06:54,168 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 706 transitions. Word has length 5 [2022-07-14 14:06:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:54,169 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 706 transitions. [2022-07-14 14:06:54,169 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 14:06:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 706 transitions. [2022-07-14 14:06:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:06:54,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:54,169 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:06:54,200 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 14:06:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:54,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash 147339050, now seen corresponding path program 1 times [2022-07-14 14:06:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:54,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165865669] [2022-07-14 14:06:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:54,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:54,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385811546] [2022-07-14 14:06:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:54,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:54,424 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 14:06:54,425 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 14:06:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:54,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:54,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:54,561 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 14:06:54,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:06:54,572 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 14:06:54,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:54,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165865669] [2022-07-14 14:06:54,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:54,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385811546] [2022-07-14 14:06:54,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385811546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:06:54,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:06:54,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-14 14:06:54,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534379533] [2022-07-14 14:06:54,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:06:54,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:06:54,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:06:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:06:54,575 INFO L87 Difference]: Start difference. First operand 273 states and 706 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 14:06:54,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:54,824 INFO L93 Difference]: Finished difference Result 285 states and 718 transitions. [2022-07-14 14:06:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:06:54,825 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 14:06:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:54,826 INFO L225 Difference]: With dead ends: 285 [2022-07-14 14:06:54,826 INFO L226 Difference]: Without dead ends: 285 [2022-07-14 14:06:54,827 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 14:06:54,827 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:54,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:06:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-14 14:06:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2022-07-14 14:06:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 2.8492063492063493) internal successors, (718), 278 states have internal predecessors, (718), 0 states have call successors, (0), 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 14:06:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 718 transitions. [2022-07-14 14:06:54,834 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 718 transitions. Word has length 6 [2022-07-14 14:06:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 718 transitions. [2022-07-14 14:06:54,834 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 14:06:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 718 transitions. [2022-07-14 14:06:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:06:54,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:54,835 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-07-14 14:06:54,853 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 14:06:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1648091610, now seen corresponding path program 2 times [2022-07-14 14:06:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:55,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634973578] [2022-07-14 14:06:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:55,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:55,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350768985] [2022-07-14 14:06:55,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:06:55,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:55,102 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 14:06:55,142 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 14:06:55,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 14:06:55,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:06:55,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:06:55,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:55,278 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 14:06:55,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634973578] [2022-07-14 14:06:55,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350768985] [2022-07-14 14:06:55,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350768985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:55,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:55,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:06:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146894488] [2022-07-14 14:06:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:06:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:06:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:06:55,280 INFO L87 Difference]: Start difference. First operand 279 states and 718 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 14:06:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:55,433 INFO L93 Difference]: Finished difference Result 279 states and 716 transitions. [2022-07-14 14:06:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:06:55,433 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 14:06:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:55,434 INFO L225 Difference]: With dead ends: 279 [2022-07-14 14:06:55,434 INFO L226 Difference]: Without dead ends: 279 [2022-07-14 14:06:55,435 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 14:06:55,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:55,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:06:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-14 14:06:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-07-14 14:06:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 2.8412698412698414) internal successors, (716), 278 states have internal predecessors, (716), 0 states have call successors, (0), 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 14:06:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 716 transitions. [2022-07-14 14:06:55,441 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 716 transitions. Word has length 9 [2022-07-14 14:06:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:55,442 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 716 transitions. [2022-07-14 14:06:55,442 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 14:06:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 716 transitions. [2022-07-14 14:06:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:06:55,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:55,442 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-14 14:06:55,474 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 14:06:55,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,659 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 14:06:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash -448763818, now seen corresponding path program 3 times [2022-07-14 14:06:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:55,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859772592] [2022-07-14 14:06:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:55,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:55,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340834974] [2022-07-14 14:06:55,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:06:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:55,719 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 14:06:55,720 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 14:06:55,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 14:06:55,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:06:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 14:06:55,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 14:06:56,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:06:56,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859772592] [2022-07-14 14:06:56,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:56,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340834974] [2022-07-14 14:06:56,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340834974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:06:56,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:06:56,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:06:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494872702] [2022-07-14 14:06:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:06:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:06:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:06:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:06:56,007 INFO L87 Difference]: Start difference. First operand 279 states and 716 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 14:06:56,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:56,409 INFO L93 Difference]: Finished difference Result 278 states and 712 transitions. [2022-07-14 14:06:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:06:56,410 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 10 [2022-07-14 14:06:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:56,411 INFO L225 Difference]: With dead ends: 278 [2022-07-14 14:06:56,411 INFO L226 Difference]: Without dead ends: 278 [2022-07-14 14:06:56,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 14:06:56,412 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:56,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:06:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-14 14:06:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-14 14:06:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 252 states have (on average 2.8253968253968256) internal successors, (712), 277 states have internal predecessors, (712), 0 states have call successors, (0), 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 14:06:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 712 transitions. [2022-07-14 14:06:56,417 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 712 transitions. Word has length 10 [2022-07-14 14:06:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:56,417 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 712 transitions. [2022-07-14 14:06:56,417 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 14:06:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 712 transitions. [2022-07-14 14:06:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:06:56,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:56,417 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-07-14 14:06:56,436 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 14:06:56,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:56,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash -448763887, now seen corresponding path program 1 times [2022-07-14 14:06:56,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:56,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769479320] [2022-07-14 14:06:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:56,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:56,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533884775] [2022-07-14 14:06:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:56,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:56,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:56,661 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 14:06:56,662 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 14:06:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:06:57,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:06:57,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:57,061 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 14:06:57,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:06:57,112 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 14:06:57,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:57,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769479320] [2022-07-14 14:06:57,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:57,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533884775] [2022-07-14 14:06:57,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533884775] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:06:57,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:06:57,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-14 14:06:57,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881412619] [2022-07-14 14:06:57,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:06:57,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 14:06:57,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:06:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:06:57,115 INFO L87 Difference]: Start difference. First operand 278 states and 712 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 14:06:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:06:57,831 INFO L93 Difference]: Finished difference Result 298 states and 730 transitions. [2022-07-14 14:06:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:06:57,832 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 14:06:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:06:57,833 INFO L225 Difference]: With dead ends: 298 [2022-07-14 14:06:57,833 INFO L226 Difference]: Without dead ends: 298 [2022-07-14 14:06:57,833 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 14:06:57,833 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 14:06:57,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 14:06:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-07-14 14:06:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2022-07-14 14:06:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 264 states have (on average 2.765151515151515) internal successors, (730), 289 states have internal predecessors, (730), 0 states have call successors, (0), 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 14:06:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 730 transitions. [2022-07-14 14:06:57,850 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 730 transitions. Word has length 10 [2022-07-14 14:06:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:06:57,850 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 730 transitions. [2022-07-14 14:06:57,850 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 14:06:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 730 transitions. [2022-07-14 14:06:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 14:06:57,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:06:57,851 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-07-14 14:06:57,869 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 14:06:58,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:58,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:06:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:06:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1413949969, now seen corresponding path program 2 times [2022-07-14 14:06:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:06:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898186788] [2022-07-14 14:06:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:06:58,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:06:58,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:06:58,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744838270] [2022-07-14 14:06:58,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:06:58,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:06:58,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:06:58,147 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 14:06:58,148 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 14:06:58,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:06:58,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:06:58,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 14:06:58,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:06:58,932 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 14:06:58,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:06:59,078 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 14:06:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:06:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898186788] [2022-07-14 14:06:59,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:06:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744838270] [2022-07-14 14:06:59,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744838270] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:06:59,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:06:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-14 14:06:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058833122] [2022-07-14 14:06:59,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:06:59,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 14:06:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:06:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 14:06:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 14:06:59,080 INFO L87 Difference]: Start difference. First operand 290 states and 730 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 14:07:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:00,109 INFO L93 Difference]: Finished difference Result 334 states and 766 transitions. [2022-07-14 14:07:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 14:07:00,109 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 14:07:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:00,111 INFO L225 Difference]: With dead ends: 334 [2022-07-14 14:07:00,111 INFO L226 Difference]: Without dead ends: 334 [2022-07-14 14:07:00,111 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 14:07:00,112 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:00,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 14:07:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-14 14:07:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2022-07-14 14:07:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 288 states have (on average 2.6597222222222223) internal successors, (766), 313 states have internal predecessors, (766), 0 states have call successors, (0), 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 14:07:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 766 transitions. [2022-07-14 14:07:00,117 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 766 transitions. Word has length 16 [2022-07-14 14:07:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:00,117 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 766 transitions. [2022-07-14 14:07:00,118 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 14:07:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 766 transitions. [2022-07-14 14:07:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 14:07:00,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:00,119 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-07-14 14:07:00,155 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 14:07:00,340 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,SelfDestructingSolverStorable8 [2022-07-14 14:07:00,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1062719983, now seen corresponding path program 3 times [2022-07-14 14:07:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:00,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428335182] [2022-07-14 14:07:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:00,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:00,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84287926] [2022-07-14 14:07:00,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:07:00,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:00,519 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 14:07:00,520 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 14:07:01,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 14:07:01,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:01,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:07:01,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-14 14:07:01,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-14 14:07:05,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428335182] [2022-07-14 14:07:05,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84287926] [2022-07-14 14:07:05,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84287926] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 14:07:05,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:07:05,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-07-14 14:07:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892906317] [2022-07-14 14:07:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:07:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:07:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:05,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:07:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-07-14 14:07:05,816 INFO L87 Difference]: Start difference. First operand 314 states and 766 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:05,868 INFO L93 Difference]: Finished difference Result 313 states and 744 transitions. [2022-07-14 14:07:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:07:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-14 14:07:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:05,869 INFO L225 Difference]: With dead ends: 313 [2022-07-14 14:07:05,870 INFO L226 Difference]: Without dead ends: 313 [2022-07-14 14:07:05,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-07-14 14:07:05,870 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:05,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 62 Unchecked, 0.0s Time] [2022-07-14 14:07:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-14 14:07:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-14 14:07:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 288 states have (on average 2.5833333333333335) internal successors, (744), 312 states have internal predecessors, (744), 0 states have call successors, (0), 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 14:07:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 744 transitions. [2022-07-14 14:07:05,876 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 744 transitions. Word has length 28 [2022-07-14 14:07:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:05,876 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 744 transitions. [2022-07-14 14:07:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 744 transitions. [2022-07-14 14:07:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-14 14:07:05,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:05,877 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:05,901 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 14:07:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 14:07:06,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:07:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935707, now seen corresponding path program 1 times [2022-07-14 14:07:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:06,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665537480] [2022-07-14 14:07:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:06,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:06,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676809796] [2022-07-14 14:07:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:06,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:06,312 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 14:07:06,313 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 14:07:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:07:07,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 5290 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 14:07:07,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:08,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:07:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:08,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665537480] [2022-07-14 14:07:08,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:08,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676809796] [2022-07-14 14:07:08,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676809796] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:08,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:08,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-07-14 14:07:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887519566] [2022-07-14 14:07:08,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-14 14:07:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-14 14:07:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-07-14 14:07:08,240 INFO L87 Difference]: Start difference. First operand 313 states and 744 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 14:07:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:10,021 INFO L93 Difference]: Finished difference Result 329 states and 760 transitions. [2022-07-14 14:07:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 14:07:10,021 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 31 [2022-07-14 14:07:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:10,023 INFO L225 Difference]: With dead ends: 329 [2022-07-14 14:07:10,023 INFO L226 Difference]: Without dead ends: 329 [2022-07-14 14:07:10,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 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 14:07:10,023 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:10,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-14 14:07:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-14 14:07:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-07-14 14:07:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 304 states have (on average 2.5) internal successors, (760), 328 states have internal predecessors, (760), 0 states have call successors, (0), 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 14:07:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 760 transitions. [2022-07-14 14:07:10,030 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 760 transitions. Word has length 31 [2022-07-14 14:07:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:10,030 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 760 transitions. [2022-07-14 14:07:10,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 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 14:07:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 760 transitions. [2022-07-14 14:07:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-14 14:07:10,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:10,033 INFO L195 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:10,076 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 14:07:10,243 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,SelfDestructingSolverStorable10 [2022-07-14 14:07:10,243 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 14:07:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1374052133, now seen corresponding path program 2 times [2022-07-14 14:07:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162345798] [2022-07-14 14:07:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:10,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617211846] [2022-07-14 14:07:10,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:07:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:10,512 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 14:07:10,513 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 14:07:12,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:07:12,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:07:12,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 7162 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:07:12,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:07:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-14 14:07:12,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:07:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-14 14:07:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:07:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162345798] [2022-07-14 14:07:12,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 14:07:12,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617211846] [2022-07-14 14:07:12,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617211846] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:07:12,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 14:07:12,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-07-14 14:07:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629717343] [2022-07-14 14:07:12,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 14:07:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:07:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:07:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:07:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:07:12,667 INFO L87 Difference]: Start difference. First operand 329 states and 760 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:07:12,911 INFO L93 Difference]: Finished difference Result 393 states and 826 transitions. [2022-07-14 14:07:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:07:12,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-14 14:07:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:07:12,913 INFO L225 Difference]: With dead ends: 393 [2022-07-14 14:07:12,913 INFO L226 Difference]: Without dead ends: 393 [2022-07-14 14:07:12,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 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 14:07:12,914 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:07:12,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:07:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-14 14:07:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-07-14 14:07:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 369 states have (on average 2.238482384823848) internal successors, (826), 392 states have internal predecessors, (826), 0 states have call successors, (0), 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 14:07:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 826 transitions. [2022-07-14 14:07:12,923 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 826 transitions. Word has length 39 [2022-07-14 14:07:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:07:12,924 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 826 transitions. [2022-07-14 14:07:12,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:07:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 826 transitions. [2022-07-14 14:07:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-14 14:07:12,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:07:12,932 INFO L195 NwaCegarLoop]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:07:12,966 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 14:07:13,151 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,SelfDestructingSolverStorable11 [2022-07-14 14:07:13,151 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 14:07:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:07:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash 234973763, now seen corresponding path program 3 times [2022-07-14 14:07:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:07:13,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539737308] [2022-07-14 14:07:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:07:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:07:14,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:07:14,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403086056] [2022-07-14 14:07:14,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:07:14,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:07:14,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:07:14,035 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 14:07:14,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process