./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-crafted/Cairo_step2-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:39:18,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:39:18,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:39:18,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:39:18,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:39:18,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:39:18,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:39:18,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:39:18,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:39:18,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:39:18,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:39:18,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:39:18,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:39:18,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:39:18,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:39:18,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:39:18,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:39:18,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:39:18,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:39:18,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:39:18,410 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:39:18,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:39:18,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:39:18,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:39:18,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:39:18,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:39:18,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:39:18,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:39:18,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:39:18,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:39:18,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:39:18,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:39:18,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:39:18,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:39:18,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:39:18,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:39:18,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:39:18,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:39:18,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:39:18,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:39:18,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:39:18,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:39:18,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-14 13:39:18,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:39:18,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:39:18,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:39:18,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:39:18,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:39:18,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:39:18,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:39:18,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:39:18,457 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:39:18,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:39:18,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:39:18,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:39:18,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 13:39:18,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:39:18,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 13:39:18,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:39:18,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:39:18,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:39:18,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:39:18,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:39:18,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:39:18,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 13:39:18,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:39:18,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:39:18,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 13:39:18,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f [2022-07-14 13:39:18,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:39:18,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:39:18,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:39:18,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:39:18,687 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:39:18,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-07-14 13:39:18,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d260ddc16/f7152aee7e5845c7a923b4d671d68970/FLAGe1d3d34bd [2022-07-14 13:39:19,100 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:39:19,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-07-14 13:39:19,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d260ddc16/f7152aee7e5845c7a923b4d671d68970/FLAGe1d3d34bd [2022-07-14 13:39:19,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d260ddc16/f7152aee7e5845c7a923b4d671d68970 [2022-07-14 13:39:19,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:39:19,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:39:19,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:39:19,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:39:19,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:39:19,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f251e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19, skipping insertion in model container [2022-07-14 13:39:19,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:39:19,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:39:19,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:39:19,261 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:39:19,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:39:19,279 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:39:19,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19 WrapperNode [2022-07-14 13:39:19,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:39:19,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:39:19,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:39:19,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:39:19,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,301 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-07-14 13:39:19,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:39:19,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:39:19,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:39:19,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:39:19,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:39:19,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:39:19,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:39:19,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:39:19,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (1/1) ... [2022-07-14 13:39:19,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:39:19,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:19,343 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 13:39:19,361 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 13:39:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:39:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:39:19,410 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:39:19,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:39:19,489 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:39:19,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:39:19,495 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 13:39:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:39:19 BoogieIcfgContainer [2022-07-14 13:39:19,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:39:19,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:39:19,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:39:19,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:39:19,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:39:19" (1/3) ... [2022-07-14 13:39:19,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6997ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:39:19, skipping insertion in model container [2022-07-14 13:39:19,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:39:19" (2/3) ... [2022-07-14 13:39:19,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6997ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:39:19, skipping insertion in model container [2022-07-14 13:39:19,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:39:19" (3/3) ... [2022-07-14 13:39:19,504 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_step2-2.c [2022-07-14 13:39:19,516 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:39:19,517 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-14 13:39:19,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:39:19,569 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@35387e67, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@591aa243 [2022-07-14 13:39:19,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-14 13:39:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 13:39:19,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:19,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 13:39:19,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2022-07-14 13:39:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:19,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396148368] [2022-07-14 13:39:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:19,692 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 13:39:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:19,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396148368] [2022-07-14 13:39:19,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396148368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:39:19,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:39:19,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:39:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527199441] [2022-07-14 13:39:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:39:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:39:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:39:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:39:19,723 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) 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 13:39:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:19,779 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-07-14 13:39:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:39:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 13:39:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:19,786 INFO L225 Difference]: With dead ends: 16 [2022-07-14 13:39:19,786 INFO L226 Difference]: Without dead ends: 7 [2022-07-14 13:39:19,788 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 13:39:19,790 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:19,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:39:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-14 13:39:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-14 13:39:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 13:39:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-07-14 13:39:19,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-07-14 13:39:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:19,836 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-07-14 13:39:19,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 13:39:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-07-14 13:39:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 13:39:19,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:19,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 13:39:19,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 13:39:19,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2022-07-14 13:39:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:19,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769354299] [2022-07-14 13:39:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:19,856 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 13:39:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:19,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769354299] [2022-07-14 13:39:19,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769354299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:39:19,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:39:19,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:39:19,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666762045] [2022-07-14 13:39:19,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:39:19,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:39:19,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:19,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:39:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:39:19,860 INFO L87 Difference]: Start difference. First operand 7 states and 7 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 13:39:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:19,890 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-07-14 13:39:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:39:19,890 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 6 [2022-07-14 13:39:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:19,891 INFO L225 Difference]: With dead ends: 11 [2022-07-14 13:39:19,891 INFO L226 Difference]: Without dead ends: 10 [2022-07-14 13:39:19,891 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 13:39:19,892 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:19,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:39:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-14 13:39:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-14 13:39:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-14 13:39:19,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2022-07-14 13:39:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:19,899 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-14 13:39:19,899 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 13:39:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-14 13:39:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 13:39:19,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:19,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:39:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 13:39:19,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -447174367, now seen corresponding path program 1 times [2022-07-14 13:39:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027813191] [2022-07-14 13:39:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027813191] [2022-07-14 13:39:19,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027813191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286340614] [2022-07-14 13:39:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:19,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:19,954 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 13:39:19,955 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 13:39:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:39:19,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286340614] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:20,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:20,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-14 13:39:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098604504] [2022-07-14 13:39:20,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:20,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:39:20,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:39:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:39:20,072 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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 13:39:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:20,106 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-07-14 13:39:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:39:20,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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 9 [2022-07-14 13:39:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:20,108 INFO L225 Difference]: With dead ends: 20 [2022-07-14 13:39:20,108 INFO L226 Difference]: Without dead ends: 19 [2022-07-14 13:39:20,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:39:20,111 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:20,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:39:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-14 13:39:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-14 13:39:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-07-14 13:39:20,121 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2022-07-14 13:39:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:20,121 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-07-14 13:39:20,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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 13:39:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-07-14 13:39:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-14 13:39:20,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:20,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2022-07-14 13:39:20,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 13:39:20,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:20,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash -169525843, now seen corresponding path program 2 times [2022-07-14 13:39:20,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:20,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530448628] [2022-07-14 13:39:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:20,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530448628] [2022-07-14 13:39:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530448628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203077779] [2022-07-14 13:39:20,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:39:20,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:20,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:20,447 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 13:39:20,452 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 13:39:20,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:39:20,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:39:20,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:39:20,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203077779] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:20,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-14 13:39:20,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016549766] [2022-07-14 13:39:20,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 13:39:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 13:39:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 13:39:20,593 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:20,630 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-07-14 13:39:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:39:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-14 13:39:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:20,631 INFO L225 Difference]: With dead ends: 38 [2022-07-14 13:39:20,631 INFO L226 Difference]: Without dead ends: 37 [2022-07-14 13:39:20,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 13:39:20,632 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:20,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:39:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-14 13:39:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-14 13:39:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-07-14 13:39:20,653 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 18 [2022-07-14 13:39:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:20,653 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-07-14 13:39:20,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:39:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-07-14 13:39:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 13:39:20,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:20,654 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2022-07-14 13:39:20,673 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 13:39:20,855 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,SelfDestructingSolverStorable3 [2022-07-14 13:39:20,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1336283181, now seen corresponding path program 3 times [2022-07-14 13:39:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167946237] [2022-07-14 13:39:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:20,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:20,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167946237] [2022-07-14 13:39:20,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167946237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:20,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476574245] [2022-07-14 13:39:20,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:39:20,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:20,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:20,984 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 13:39:20,987 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 13:39:21,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-14 13:39:21,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:39:21,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:39:21,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:21,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:21,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476574245] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:21,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:21,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-07-14 13:39:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415577200] [2022-07-14 13:39:21,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 13:39:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 13:39:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:39:21,268 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:39:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:21,378 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-07-14 13:39:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 13:39:21,379 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2022-07-14 13:39:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:21,380 INFO L225 Difference]: With dead ends: 74 [2022-07-14 13:39:21,380 INFO L226 Difference]: Without dead ends: 73 [2022-07-14 13:39:21,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:39:21,381 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:21,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:39:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-14 13:39:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-14 13:39:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 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 13:39:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-07-14 13:39:21,387 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 36 [2022-07-14 13:39:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:21,388 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-07-14 13:39:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:39:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-07-14 13:39:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-14 13:39:21,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:21,389 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1] [2022-07-14 13:39:21,408 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 13:39:21,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:21,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:21,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1274074413, now seen corresponding path program 4 times [2022-07-14 13:39:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:21,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041467869] [2022-07-14 13:39:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041467869] [2022-07-14 13:39:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041467869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433201152] [2022-07-14 13:39:21,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:39:21,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:21,885 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 13:39:21,886 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 13:39:21,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:39:21,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:39:21,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 13:39:21,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:22,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:22,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433201152] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:22,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:22,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-07-14 13:39:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319946156] [2022-07-14 13:39:22,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-14 13:39:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-14 13:39:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-14 13:39:22,630 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 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 13:39:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:22,790 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2022-07-14 13:39:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-14 13:39:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 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 72 [2022-07-14 13:39:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:22,792 INFO L225 Difference]: With dead ends: 146 [2022-07-14 13:39:22,807 INFO L226 Difference]: Without dead ends: 145 [2022-07-14 13:39:22,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-14 13:39:22,808 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:22,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:39:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-14 13:39:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-07-14 13:39:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 states have internal predecessors, (145), 0 states have call successors, (0), 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 13:39:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2022-07-14 13:39:22,818 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 72 [2022-07-14 13:39:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:22,818 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2022-07-14 13:39:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 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 13:39:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2022-07-14 13:39:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-14 13:39:22,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:22,822 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1] [2022-07-14 13:39:22,841 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 13:39:23,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:23,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:23,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2081087277, now seen corresponding path program 5 times [2022-07-14 13:39:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:23,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913246499] [2022-07-14 13:39:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:23,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913246499] [2022-07-14 13:39:23,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913246499] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:23,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804856405] [2022-07-14 13:39:23,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:39:23,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:23,985 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 13:39:23,986 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 13:39:24,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-07-14 13:39:24,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:39:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-14 13:39:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:24,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:26,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804856405] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:26,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:26,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-07-14 13:39:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629506557] [2022-07-14 13:39:26,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-07-14 13:39:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-07-14 13:39:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-14 13:39:26,427 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 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 13:39:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:26,711 INFO L93 Difference]: Finished difference Result 290 states and 337 transitions. [2022-07-14 13:39:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-14 13:39:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 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 144 [2022-07-14 13:39:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:26,717 INFO L225 Difference]: With dead ends: 290 [2022-07-14 13:39:26,717 INFO L226 Difference]: Without dead ends: 289 [2022-07-14 13:39:26,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-14 13:39:26,719 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:26,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:39:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-14 13:39:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-07-14 13:39:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.0034722222222223) internal successors, (289), 288 states have internal predecessors, (289), 0 states have call successors, (0), 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 13:39:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2022-07-14 13:39:26,742 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 144 [2022-07-14 13:39:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:26,743 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2022-07-14 13:39:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 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 13:39:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2022-07-14 13:39:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-14 13:39:26,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:26,748 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1, 1] [2022-07-14 13:39:26,767 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 13:39:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:26,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash 223408941, now seen corresponding path program 6 times [2022-07-14 13:39:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:26,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403362014] [2022-07-14 13:39:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:29,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403362014] [2022-07-14 13:39:29,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403362014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447181753] [2022-07-14 13:39:29,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:39:29,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:29,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:29,741 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 13:39:29,742 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 13:39:29,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-07-14 13:39:29,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:39:29,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-14 13:39:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:30,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:39:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:38,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447181753] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:39:38,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:39:38,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-07-14 13:39:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116510421] [2022-07-14 13:39:38,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:39:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-07-14 13:39:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:39:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-07-14 13:39:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-14 13:39:38,157 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 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 13:39:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:39:39,039 INFO L93 Difference]: Finished difference Result 578 states and 673 transitions. [2022-07-14 13:39:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-07-14 13:39:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 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 288 [2022-07-14 13:39:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:39:39,041 INFO L225 Difference]: With dead ends: 578 [2022-07-14 13:39:39,041 INFO L226 Difference]: Without dead ends: 577 [2022-07-14 13:39:39,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-14 13:39:39,044 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:39:39,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:39:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-14 13:39:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-14 13:39:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.0017361111111112) internal successors, (577), 576 states have internal predecessors, (577), 0 states have call successors, (0), 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 13:39:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 577 transitions. [2022-07-14 13:39:39,061 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 577 transitions. Word has length 288 [2022-07-14 13:39:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:39:39,061 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 577 transitions. [2022-07-14 13:39:39,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 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 13:39:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 577 transitions. [2022-07-14 13:39:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-07-14 13:39:39,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:39:39,068 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 1, 1, 1, 1] [2022-07-14 13:39:39,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-14 13:39:39,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:39,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:39:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:39:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1943725267, now seen corresponding path program 7 times [2022-07-14 13:39:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:39:39,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131049596] [2022-07-14 13:39:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:39:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:39:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:39:49,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131049596] [2022-07-14 13:39:49,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131049596] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:39:49,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429178711] [2022-07-14 13:39:49,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:39:49,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:39:49,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:39:49,743 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 13:39:49,761 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 13:39:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:39:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-14 13:39:49,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:39:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:39:50,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:40:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:40:20,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429178711] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:40:20,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 13:40:20,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-07-14 13:40:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927680992] [2022-07-14 13:40:20,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 13:40:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-07-14 13:40:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:40:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-07-14 13:40:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-07-14 13:40:20,875 INFO L87 Difference]: Start difference. First operand 577 states and 577 transitions. Second operand has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 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 13:40:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:40:24,045 INFO L93 Difference]: Finished difference Result 1154 states and 1345 transitions. [2022-07-14 13:40:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-07-14 13:40:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 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 576 [2022-07-14 13:40:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:40:24,049 INFO L225 Difference]: With dead ends: 1154 [2022-07-14 13:40:24,049 INFO L226 Difference]: Without dead ends: 1153 [2022-07-14 13:40:24,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-07-14 13:40:24,056 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:40:24,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 13:40:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-07-14 13:40:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2022-07-14 13:40:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.0008680555555556) internal successors, (1153), 1152 states have internal predecessors, (1153), 0 states have call successors, (0), 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 13:40:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1153 transitions. [2022-07-14 13:40:24,079 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1153 transitions. Word has length 576 [2022-07-14 13:40:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:40:24,080 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1153 transitions. [2022-07-14 13:40:24,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 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 13:40:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1153 transitions. [2022-07-14 13:40:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2022-07-14 13:40:24,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:40:24,100 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 1, 1, 1, 1] [2022-07-14 13:40:24,127 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 13:40:24,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:40:24,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-07-14 13:40:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:40:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1158845651, now seen corresponding path program 8 times [2022-07-14 13:40:24,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:40:24,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774656670] [2022-07-14 13:40:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:40:24,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:40:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:41:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:41:05,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:41:05,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774656670] [2022-07-14 13:41:05,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774656670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:41:05,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340441762] [2022-07-14 13:41:05,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:41:05,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:41:05,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:41:05,794 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 13:41:05,795 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 13:41:06,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:41:06,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:41:06,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 384 conjunts are in the unsatisfiable core [2022-07-14 13:41:06,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:41:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:41:07,139 INFO L328 TraceCheckSpWp]: Computing backward predicates...