./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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-lit/Avery-FLOPS2006-Table1.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 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:59:53,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:59:53,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:59:53,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:59:53,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:59:53,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:59:53,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:59:53,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:59:53,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:59:53,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:59:53,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:59:53,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:59:53,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:59:53,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:59:53,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:59:53,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:59:53,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:59:53,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:59:53,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:59:53,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:59:53,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:59:53,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:59:53,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:59:53,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:59:53,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:59:53,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:59:53,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:59:53,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:59:53,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:59:53,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:59:53,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:59:53,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:59:53,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:59:53,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:59:53,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:59:53,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:59:53,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:59:53,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:59:53,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:59:53,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:59:53,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:59:53,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-16 08:59:53,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:59:53,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:59:53,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:59:53,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:59:53,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:59:53,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:59:53,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:59:53,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:59:53,314 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:59:53,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:59:53,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:59:53,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:59:53,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:59:53,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 08:59:53,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:59:53,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 08:59:53,316 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 08:59:53,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 08:59:53,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:59:53,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 08:59:53,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:59:53,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:59:53,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:59:53,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:59:53,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:59:53,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:59:53,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 08:59:53,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:59:53,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:59:53,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 08:59:53,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:59:53,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2021-12-16 08:59:53,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:59:53,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:59:53,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:59:53,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:59:53,538 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:59:53,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-12-16 08:59:53,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1076c31a/80cf7887b0174d2c91c85637e896b300/FLAG5afc1aec9 [2021-12-16 08:59:53,936 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:59:53,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-12-16 08:59:53,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1076c31a/80cf7887b0174d2c91c85637e896b300/FLAG5afc1aec9 [2021-12-16 08:59:53,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1076c31a/80cf7887b0174d2c91c85637e896b300 [2021-12-16 08:59:53,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:59:53,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:59:53,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:59:53,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:59:53,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:59:53,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:59:53" (1/1) ... [2021-12-16 08:59:53,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd33ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:53, skipping insertion in model container [2021-12-16 08:59:53,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:59:53" (1/1) ... [2021-12-16 08:59:53,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:59:53,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:59:54,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:59:54,102 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:59:54,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:59:54,136 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:59:54,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54 WrapperNode [2021-12-16 08:59:54,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:59:54,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:59:54,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:59:54,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:59:54,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,157 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-16 08:59:54,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:59:54,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:59:54,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:59:54,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:59:54,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:59:54,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:59:54,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:59:54,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:59:54,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (1/1) ... [2021-12-16 08:59:54,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:59:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:54,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 08:59:54,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 08:59:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:59:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:59:54,283 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:59:54,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:59:54,419 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:59:54,424 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:59:54,426 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 08:59:54,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:59:54 BoogieIcfgContainer [2021-12-16 08:59:54,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:59:54,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:59:54,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:59:54,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:59:54,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:59:53" (1/3) ... [2021-12-16 08:59:54,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2e337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:59:54, skipping insertion in model container [2021-12-16 08:59:54,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:59:54" (2/3) ... [2021-12-16 08:59:54,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2e337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:59:54, skipping insertion in model container [2021-12-16 08:59:54,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:59:54" (3/3) ... [2021-12-16 08:59:54,448 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2021-12-16 08:59:54,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:59:54,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-16 08:59:54,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:59:54,544 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 08:59:54,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-16 08:59:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:59:54,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:54,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:59:54,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2021-12-16 08:59:54,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:54,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415986592] [2021-12-16 08:59:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:54,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:54,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:54,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415986592] [2021-12-16 08:59:54,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415986592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:54,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:54,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:59:54,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998939448] [2021-12-16 08:59:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:54,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:59:54,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:59:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:54,745 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:54,815 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2021-12-16 08:59:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:59:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-16 08:59:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:54,822 INFO L225 Difference]: With dead ends: 58 [2021-12-16 08:59:54,823 INFO L226 Difference]: Without dead ends: 32 [2021-12-16 08:59:54,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:54,828 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:54,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-16 08:59:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-12-16 08:59:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-16 08:59:54,859 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2021-12-16 08:59:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:54,859 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-16 08:59:54,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-16 08:59:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 08:59:54,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:54,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 08:59:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 08:59:54,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 889512267, now seen corresponding path program 1 times [2021-12-16 08:59:54,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:54,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994169547] [2021-12-16 08:59:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:54,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:54,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994169547] [2021-12-16 08:59:54,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994169547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:54,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:54,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:59:54,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202627482] [2021-12-16 08:59:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:54,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:59:54,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:59:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:54,893 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:54,914 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-12-16 08:59:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:59:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-16 08:59:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:54,915 INFO L225 Difference]: With dead ends: 32 [2021-12-16 08:59:54,916 INFO L226 Difference]: Without dead ends: 22 [2021-12-16 08:59:54,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:59:54,917 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:54,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-16 08:59:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-16 08:59:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-16 08:59:54,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2021-12-16 08:59:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:54,921 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-16 08:59:54,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-16 08:59:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 08:59:54,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:54,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:54,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 08:59:54,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1805119269, now seen corresponding path program 1 times [2021-12-16 08:59:54,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:54,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416719382] [2021-12-16 08:59:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:54,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:54,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:54,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416719382] [2021-12-16 08:59:54,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416719382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:54,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:54,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:59:54,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196722499] [2021-12-16 08:59:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:54,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:59:54,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:59:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:59:54,939 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:54,949 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-12-16 08:59:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:59:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 08:59:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:54,950 INFO L225 Difference]: With dead ends: 25 [2021-12-16 08:59:54,950 INFO L226 Difference]: Without dead ends: 24 [2021-12-16 08:59:54,950 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:59:54,951 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:54,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-16 08:59:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-12-16 08:59:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-16 08:59:54,954 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2021-12-16 08:59:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:54,955 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-16 08:59:54,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-16 08:59:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 08:59:54,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:54,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:54,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 08:59:54,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 124122543, now seen corresponding path program 1 times [2021-12-16 08:59:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:54,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648289297] [2021-12-16 08:59:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:54,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:54,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:54,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648289297] [2021-12-16 08:59:54,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648289297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:54,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:54,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:59:54,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59584558] [2021-12-16 08:59:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:54,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:59:54,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:59:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:59:54,974 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:54,985 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-16 08:59:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:59:54,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 08:59:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:54,986 INFO L225 Difference]: With dead ends: 31 [2021-12-16 08:59:54,986 INFO L226 Difference]: Without dead ends: 29 [2021-12-16 08:59:54,986 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:59:54,987 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:54,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-16 08:59:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-12-16 08:59:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-16 08:59:54,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2021-12-16 08:59:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:54,991 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-16 08:59:54,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-16 08:59:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 08:59:54,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:54,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:54,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 08:59:54,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -232120963, now seen corresponding path program 1 times [2021-12-16 08:59:54,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:54,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336761142] [2021-12-16 08:59:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:54,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 08:59:55,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336761142] [2021-12-16 08:59:55,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336761142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:55,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:55,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:59:55,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154399780] [2021-12-16 08:59:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:55,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:59:55,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:59:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:59:55,014 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:55,028 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-16 08:59:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:59:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-16 08:59:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:55,029 INFO L225 Difference]: With dead ends: 28 [2021-12-16 08:59:55,029 INFO L226 Difference]: Without dead ends: 27 [2021-12-16 08:59:55,030 INFO L932 BasicCegarLoop]: 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 [2021-12-16 08:59:55,030 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:55,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-16 08:59:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-16 08:59:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-16 08:59:55,034 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2021-12-16 08:59:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:55,034 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-16 08:59:55,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-16 08:59:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 08:59:55,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:55,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 08:59:55,036 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1394184806, now seen corresponding path program 1 times [2021-12-16 08:59:55,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942753778] [2021-12-16 08:59:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:55,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942753778] [2021-12-16 08:59:55,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942753778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:59:55,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:59:55,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:59:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680955776] [2021-12-16 08:59:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:59:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:59:55,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:59:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:55,064 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:55,080 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-12-16 08:59:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:59:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-16 08:59:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:55,081 INFO L225 Difference]: With dead ends: 27 [2021-12-16 08:59:55,081 INFO L226 Difference]: Without dead ends: 26 [2021-12-16 08:59:55,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:55,082 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:55,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-16 08:59:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-16 08:59:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-12-16 08:59:55,086 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2021-12-16 08:59:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:55,086 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-12-16 08:59:55,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-12-16 08:59:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 08:59:55,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:55,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:55,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 08:59:55,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1394227507, now seen corresponding path program 1 times [2021-12-16 08:59:55,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:55,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27922938] [2021-12-16 08:59:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:55,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:55,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27922938] [2021-12-16 08:59:55,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27922938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077017200] [2021-12-16 08:59:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:55,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:55,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 08:59:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:59:55,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:55,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:55,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077017200] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:55,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:55,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 08:59:55,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193572240] [2021-12-16 08:59:55,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:55,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 08:59:55,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 08:59:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:55,264 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:55,298 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2021-12-16 08:59:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 08:59:55,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 12 [2021-12-16 08:59:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:55,299 INFO L225 Difference]: With dead ends: 70 [2021-12-16 08:59:55,299 INFO L226 Difference]: Without dead ends: 68 [2021-12-16 08:59:55,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:55,300 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:55,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-16 08:59:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2021-12-16 08:59:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-16 08:59:55,305 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 12 [2021-12-16 08:59:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:55,305 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-16 08:59:55,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-16 08:59:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 08:59:55,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:55,306 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:55,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:55,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:55,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:55,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:55,526 INFO L85 PathProgramCache]: Analyzing trace with hash 767450986, now seen corresponding path program 1 times [2021-12-16 08:59:55,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:55,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271711061] [2021-12-16 08:59:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 08:59:55,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:55,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271711061] [2021-12-16 08:59:55,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271711061] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:55,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911175991] [2021-12-16 08:59:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:55,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:55,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:55,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 08:59:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:59:55,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 08:59:55,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 08:59:55,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911175991] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:55,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:55,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 08:59:55,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63148200] [2021-12-16 08:59:55,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:55,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 08:59:55,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 08:59:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:55,641 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:55,664 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2021-12-16 08:59:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 08:59:55,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 08:59:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:55,670 INFO L225 Difference]: With dead ends: 81 [2021-12-16 08:59:55,671 INFO L226 Difference]: Without dead ends: 80 [2021-12-16 08:59:55,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:55,672 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:55,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-16 08:59:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2021-12-16 08:59:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-12-16 08:59:55,683 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 16 [2021-12-16 08:59:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:55,683 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-12-16 08:59:55,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-12-16 08:59:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 08:59:55,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:55,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:55,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:55,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-16 08:59:55,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1021473915, now seen corresponding path program 1 times [2021-12-16 08:59:55,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429926085] [2021-12-16 08:59:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:55,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:55,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429926085] [2021-12-16 08:59:55,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429926085] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:55,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626985411] [2021-12-16 08:59:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:55,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:55,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:55,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 08:59:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:55,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:59:55,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:56,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:56,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626985411] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:56,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:56,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 08:59:56,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931845662] [2021-12-16 08:59:56,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:56,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 08:59:56,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 08:59:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:56,072 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 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) [2021-12-16 08:59:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:56,092 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2021-12-16 08:59:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 08:59:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 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) Word has length 19 [2021-12-16 08:59:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:56,094 INFO L225 Difference]: With dead ends: 82 [2021-12-16 08:59:56,094 INFO L226 Difference]: Without dead ends: 81 [2021-12-16 08:59:56,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 08:59:56,095 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:56,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-16 08:59:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-16 08:59:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-12-16 08:59:56,100 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 19 [2021-12-16 08:59:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:56,100 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-12-16 08:59:56,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 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) [2021-12-16 08:59:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-12-16 08:59:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 08:59:56,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:56,101 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-16 08:59:56,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:56,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1125896027, now seen corresponding path program 2 times [2021-12-16 08:59:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909952734] [2021-12-16 08:59:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:56,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:56,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:56,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909952734] [2021-12-16 08:59:56,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909952734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:56,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168235257] [2021-12-16 08:59:56,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:59:56,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:56,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:56,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:56,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:59:56,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:56,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:59:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:56,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 08:59:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:56,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:56,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168235257] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:56,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:56,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-16 08:59:56,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41467361] [2021-12-16 08:59:56,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:56,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 08:59:56,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 08:59:56,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 08:59:56,529 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:56,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:56,604 INFO L93 Difference]: Finished difference Result 240 states and 282 transitions. [2021-12-16 08:59:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 08:59:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 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 27 [2021-12-16 08:59:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:56,605 INFO L225 Difference]: With dead ends: 240 [2021-12-16 08:59:56,606 INFO L226 Difference]: Without dead ends: 238 [2021-12-16 08:59:56,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 08:59:56,606 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 141 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:56,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 94 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:59:56,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-16 08:59:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 111. [2021-12-16 08:59:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 110 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-12-16 08:59:56,613 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 27 [2021-12-16 08:59:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:56,613 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-12-16 08:59:56,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-12-16 08:59:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 08:59:56,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:56,615 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:56,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 08:59:56,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:56,830 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash -787231299, now seen corresponding path program 2 times [2021-12-16 08:59:56,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:56,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388944362] [2021-12-16 08:59:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:56,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 08:59:56,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388944362] [2021-12-16 08:59:56,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388944362] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:56,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179045958] [2021-12-16 08:59:56,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:59:56,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:56,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:56,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 08:59:56,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 08:59:56,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:56,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:59:56,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 08:59:56,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 08:59:56,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179045958] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:56,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:56,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-16 08:59:56,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847311575] [2021-12-16 08:59:56,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:56,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:59:56,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:59:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:59:56,981 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-12-16 08:59:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:56,994 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2021-12-16 08:59:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:59:56,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 31 [2021-12-16 08:59:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:56,995 INFO L225 Difference]: With dead ends: 111 [2021-12-16 08:59:56,995 INFO L226 Difference]: Without dead ends: 110 [2021-12-16 08:59:56,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:59:56,996 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:56,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-16 08:59:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-12-16 08:59:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-12-16 08:59:57,001 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 31 [2021-12-16 08:59:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:57,001 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-12-16 08:59:57,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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) [2021-12-16 08:59:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-12-16 08:59:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 08:59:57,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:57,002 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:57,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:57,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 08:59:57,218 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1886125752, now seen corresponding path program 2 times [2021-12-16 08:59:57,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:57,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531544761] [2021-12-16 08:59:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:57,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:57,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:57,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531544761] [2021-12-16 08:59:57,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531544761] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:57,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980069945] [2021-12-16 08:59:57,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:59:57,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:57,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:57,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:57,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 08:59:57,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:59:57,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:57,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:59:57,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:57,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:57,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980069945] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:57,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:57,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-16 08:59:57,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630768462] [2021-12-16 08:59:57,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:57,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 08:59:57,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 08:59:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 08:59:57,432 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:57,470 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2021-12-16 08:59:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 08:59:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 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 34 [2021-12-16 08:59:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:57,471 INFO L225 Difference]: With dead ends: 171 [2021-12-16 08:59:57,472 INFO L226 Difference]: Without dead ends: 170 [2021-12-16 08:59:57,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 08:59:57,472 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:57,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 51 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:59:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-16 08:59:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-16 08:59:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 169 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 191 transitions. [2021-12-16 08:59:57,477 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 191 transitions. Word has length 34 [2021-12-16 08:59:57,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:57,478 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 191 transitions. [2021-12-16 08:59:57,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 191 transitions. [2021-12-16 08:59:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 08:59:57,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:57,479 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-16 08:59:57,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-16 08:59:57,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:57,699 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1693125349, now seen corresponding path program 3 times [2021-12-16 08:59:57,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514540748] [2021-12-16 08:59:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:57,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:57,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514540748] [2021-12-16 08:59:57,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514540748] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:57,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84664352] [2021-12-16 08:59:57,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:59:57,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:57,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:57,856 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) [2021-12-16 08:59:57,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 08:59:57,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 08:59:57,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:57,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:59:57,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:58,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84664352] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:58,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:58,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-16 08:59:58,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517562319] [2021-12-16 08:59:58,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:58,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 08:59:58,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 08:59:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 08:59:58,226 INFO L87 Difference]: Start difference. First operand 170 states and 191 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:58,340 INFO L93 Difference]: Finished difference Result 837 states and 959 transitions. [2021-12-16 08:59:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 08:59:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 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 57 [2021-12-16 08:59:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:58,343 INFO L225 Difference]: With dead ends: 837 [2021-12-16 08:59:58,343 INFO L226 Difference]: Without dead ends: 835 [2021-12-16 08:59:58,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 08:59:58,344 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 333 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:58,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 171 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:59:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-12-16 08:59:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 230. [2021-12-16 08:59:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.158590308370044) internal successors, (263), 229 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 263 transitions. [2021-12-16 08:59:58,352 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 263 transitions. Word has length 57 [2021-12-16 08:59:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:58,359 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 263 transitions. [2021-12-16 08:59:58,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 263 transitions. [2021-12-16 08:59:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-16 08:59:58,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:58,361 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:59:58,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:58,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:58,577 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash 516196584, now seen corresponding path program 3 times [2021-12-16 08:59:58,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:58,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219972962] [2021-12-16 08:59:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:58,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:58,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219972962] [2021-12-16 08:59:58,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219972962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:58,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686119309] [2021-12-16 08:59:58,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:59:58,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:58,663 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) [2021-12-16 08:59:58,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 08:59:58,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 08:59:58,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:58,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 08:59:58,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:58,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:59:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:59,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686119309] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:59:59,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 08:59:59,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-16 08:59:59,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308760908] [2021-12-16 08:59:59,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 08:59:59,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 08:59:59,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 08:59:59,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 08:59:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 08:59:59,015 INFO L87 Difference]: Start difference. First operand 230 states and 263 transitions. Second operand has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:59:59,094 INFO L93 Difference]: Finished difference Result 351 states and 419 transitions. [2021-12-16 08:59:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 08:59:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 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 64 [2021-12-16 08:59:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:59:59,095 INFO L225 Difference]: With dead ends: 351 [2021-12-16 08:59:59,095 INFO L226 Difference]: Without dead ends: 350 [2021-12-16 08:59:59,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 08:59:59,096 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:59:59,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 89 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:59:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-16 08:59:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-16 08:59:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 347 states have (on average 1.138328530259366) internal successors, (395), 349 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 395 transitions. [2021-12-16 08:59:59,102 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 395 transitions. Word has length 64 [2021-12-16 08:59:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:59:59,102 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 395 transitions. [2021-12-16 08:59:59,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:59:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 395 transitions. [2021-12-16 08:59:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 08:59:59,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:59:59,103 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-16 08:59:59,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 08:59:59,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 08:59:59,316 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 08:59:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:59:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1715892069, now seen corresponding path program 4 times [2021-12-16 08:59:59,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 08:59:59,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747321841] [2021-12-16 08:59:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:59:59,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 08:59:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:59:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:59,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 08:59:59,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747321841] [2021-12-16 08:59:59,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747321841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:59:59,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133389679] [2021-12-16 08:59:59,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:59:59,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 08:59:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:59:59,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 08:59:59,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 08:59:59,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:59:59,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:59:59,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 08:59:59,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:59:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:59:59,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:00,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133389679] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:00,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:00,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-16 09:00:00,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5082882] [2021-12-16 09:00:00,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:00,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-16 09:00:00,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-16 09:00:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:00,477 INFO L87 Difference]: Start difference. First operand 350 states and 395 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:00,859 INFO L93 Difference]: Finished difference Result 3117 states and 3509 transitions. [2021-12-16 09:00:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-16 09:00:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 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 117 [2021-12-16 09:00:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:00,866 INFO L225 Difference]: With dead ends: 3117 [2021-12-16 09:00:00,866 INFO L226 Difference]: Without dead ends: 3115 [2021-12-16 09:00:00,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:00,868 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 737 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:00,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 344 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:00:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2021-12-16 09:00:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 470. [2021-12-16 09:00:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 467 states have (on average 1.1541755888650964) internal successors, (539), 469 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 539 transitions. [2021-12-16 09:00:00,882 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 539 transitions. Word has length 117 [2021-12-16 09:00:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:00,882 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 539 transitions. [2021-12-16 09:00:00,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 539 transitions. [2021-12-16 09:00:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 09:00:00,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:00,884 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:00,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:01,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 09:00:01,099 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:00:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2057023448, now seen corresponding path program 4 times [2021-12-16 09:00:01,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:01,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172408612] [2021-12-16 09:00:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:01,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:01,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172408612] [2021-12-16 09:00:01,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172408612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203701722] [2021-12-16 09:00:01,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:00:01,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:01,367 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:01,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:00:01,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:00:01,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:01,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 09:00:01,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:01,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:02,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203701722] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:02,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:02,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-16 09:00:02,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864426291] [2021-12-16 09:00:02,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-16 09:00:02,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-16 09:00:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:02,359 INFO L87 Difference]: Start difference. First operand 470 states and 539 transitions. Second operand has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:02,583 INFO L93 Difference]: Finished difference Result 711 states and 851 transitions. [2021-12-16 09:00:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-16 09:00:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 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 124 [2021-12-16 09:00:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:02,586 INFO L225 Difference]: With dead ends: 711 [2021-12-16 09:00:02,586 INFO L226 Difference]: Without dead ends: 710 [2021-12-16 09:00:02,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:02,587 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:02,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 160 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-16 09:00:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2021-12-16 09:00:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 707 states have (on average 1.1357850070721358) internal successors, (803), 709 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 803 transitions. [2021-12-16 09:00:02,597 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 803 transitions. Word has length 124 [2021-12-16 09:00:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:02,597 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 803 transitions. [2021-12-16 09:00:02,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 803 transitions. [2021-12-16 09:00:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-16 09:00:02,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:02,599 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-16 09:00:02,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:02,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 09:00:02,816 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:00:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1021052827, now seen corresponding path program 5 times [2021-12-16 09:00:02,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405112341] [2021-12-16 09:00:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:02,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:03,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:03,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405112341] [2021-12-16 09:00:03,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405112341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:03,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678665143] [2021-12-16 09:00:03,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:00:03,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:03,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:03,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:00:03,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:00:03,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:03,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-16 09:00:03,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:04,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:06,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678665143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:06,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:06,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-16 09:00:06,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483529206] [2021-12-16 09:00:06,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:06,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-16 09:00:06,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:06,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-16 09:00:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:00:06,473 INFO L87 Difference]: Start difference. First operand 710 states and 803 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:08,006 INFO L93 Difference]: Finished difference Result 11997 states and 13361 transitions. [2021-12-16 09:00:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-16 09:00:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 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 237 [2021-12-16 09:00:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:08,032 INFO L225 Difference]: With dead ends: 11997 [2021-12-16 09:00:08,032 INFO L226 Difference]: Without dead ends: 11995 [2021-12-16 09:00:08,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:00:08,038 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1939 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:08,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 678 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:00:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2021-12-16 09:00:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 950. [2021-12-16 09:00:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 947 states have (on average 1.1520591341077087) internal successors, (1091), 949 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1091 transitions. [2021-12-16 09:00:08,091 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1091 transitions. Word has length 237 [2021-12-16 09:00:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:08,092 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1091 transitions. [2021-12-16 09:00:08,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1091 transitions. [2021-12-16 09:00:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-16 09:00:08,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:08,094 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:08,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:08,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 09:00:08,311 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:00:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1115078312, now seen corresponding path program 5 times [2021-12-16 09:00:08,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:08,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996834033] [2021-12-16 09:00:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:08,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:09,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996834033] [2021-12-16 09:00:09,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996834033] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:09,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601828815] [2021-12-16 09:00:09,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:00:09,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:09,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:09,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 09:00:09,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:00:09,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:09,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-16 09:00:09,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:09,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:11,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601828815] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:11,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:11,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-16 09:00:11,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229093056] [2021-12-16 09:00:11,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:11,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-16 09:00:11,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:11,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-16 09:00:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:00:11,402 INFO L87 Difference]: Start difference. First operand 950 states and 1091 transitions. Second operand has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:12,396 INFO L93 Difference]: Finished difference Result 1431 states and 1715 transitions. [2021-12-16 09:00:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-16 09:00:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 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 244 [2021-12-16 09:00:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:12,400 INFO L225 Difference]: With dead ends: 1431 [2021-12-16 09:00:12,400 INFO L226 Difference]: Without dead ends: 1430 [2021-12-16 09:00:12,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:00:12,402 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 173 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:12,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 305 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:00:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-12-16 09:00:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-12-16 09:00:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1427 states have (on average 1.1345480028030834) internal successors, (1619), 1429 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1619 transitions. [2021-12-16 09:00:12,447 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1619 transitions. Word has length 244 [2021-12-16 09:00:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:12,447 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1619 transitions. [2021-12-16 09:00:12,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1619 transitions. [2021-12-16 09:00:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-12-16 09:00:12,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:12,465 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2021-12-16 09:00:12,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:12,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-16 09:00:12,666 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:00:12,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash 351930981, now seen corresponding path program 6 times [2021-12-16 09:00:12,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:12,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415432192] [2021-12-16 09:00:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:12,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:15,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415432192] [2021-12-16 09:00:15,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415432192] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992845702] [2021-12-16 09:00:15,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 09:00:15,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:15,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:15,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 09:00:15,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-16 09:00:15,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-16 09:00:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:17,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992845702] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:23,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:23,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-16 09:00:23,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117870122] [2021-12-16 09:00:23,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:23,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-16 09:00:23,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-16 09:00:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-16 09:00:23,840 INFO L87 Difference]: Start difference. First operand 1430 states and 1619 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:39,642 INFO L93 Difference]: Finished difference Result 47037 states and 52073 transitions. [2021-12-16 09:00:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-16 09:00:39,643 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 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 477 [2021-12-16 09:00:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:39,704 INFO L225 Difference]: With dead ends: 47037 [2021-12-16 09:00:39,704 INFO L226 Difference]: Without dead ends: 47035 [2021-12-16 09:00:39,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-16 09:00:39,723 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 4245 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:39,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4245 Valid, 1349 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 09:00:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47035 states. [2021-12-16 09:00:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47035 to 1910. [2021-12-16 09:00:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1907 states have (on average 1.1510225485055061) internal successors, (2195), 1909 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2195 transitions. [2021-12-16 09:00:39,912 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2195 transitions. Word has length 477 [2021-12-16 09:00:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:39,912 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 2195 transitions. [2021-12-16 09:00:39,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2195 transitions. [2021-12-16 09:00:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-12-16 09:00:39,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:39,918 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:39,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:40,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:40,131 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:00:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2035868760, now seen corresponding path program 6 times [2021-12-16 09:00:40,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:40,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866554449] [2021-12-16 09:00:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:40,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:42,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866554449] [2021-12-16 09:00:42,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866554449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33353671] [2021-12-16 09:00:42,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 09:00:42,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:42,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:42,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:42,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 09:00:43,166 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-16 09:00:43,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:43,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 97 conjunts are in the unsatisfiable core [2021-12-16 09:00:43,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:44,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:51,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33353671] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:51,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:51,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-16 09:00:51,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424367412] [2021-12-16 09:00:51,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:51,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-16 09:00:51,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-16 09:00:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-16 09:00:51,684 INFO L87 Difference]: Start difference. First operand 1910 states and 2195 transitions. Second operand has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:06,158 INFO L93 Difference]: Finished difference Result 2871 states and 3443 transitions. [2021-12-16 09:01:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-16 09:01:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 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 484 [2021-12-16 09:01:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:06,163 INFO L225 Difference]: With dead ends: 2871 [2021-12-16 09:01:06,163 INFO L226 Difference]: Without dead ends: 2870 [2021-12-16 09:01:06,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-16 09:01:06,165 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 323 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:06,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 597 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 09:01:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-12-16 09:01:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-12-16 09:01:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2867 states have (on average 1.1339379141960237) internal successors, (3251), 2869 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3251 transitions. [2021-12-16 09:01:06,192 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3251 transitions. Word has length 484 [2021-12-16 09:01:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:06,193 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 3251 transitions. [2021-12-16 09:01:06,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3251 transitions. [2021-12-16 09:01:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-12-16 09:01:06,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:06,210 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1] [2021-12-16 09:01:06,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:06,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:06,428 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-16 09:01:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash 353513061, now seen corresponding path program 7 times [2021-12-16 09:01:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:06,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170662587] [2021-12-16 09:01:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:06,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat