./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 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/GopanReps-CAV2006-Fig1a.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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:26:45,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:26:45,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:26:46,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:26:46,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:26:46,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:26:46,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:26:46,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:26:46,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:26:46,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:26:46,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:26:46,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:26:46,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:26:46,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:26:46,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:26:46,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:26:46,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:26:46,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:26:46,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:26:46,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:26:46,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:26:46,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:26:46,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:26:46,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:26:46,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:26:46,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:26:46,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:26:46,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:26:46,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:26:46,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:26:46,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:26:46,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:26:46,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:26:46,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:26:46,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:26:46,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:26:46,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:26:46,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:26:46,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:26:46,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:26:46,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:26:46,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-22 19:26:46,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:26:46,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:26:46,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:26:46,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:26:46,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:26:46,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:26:46,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:26:46,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:26:46,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:26:46,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:26:46,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:26:46,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:26:46,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:26:46,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:26:46,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:26:46,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2021-12-22 19:26:46,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:26:46,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:26:46,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:26:46,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:26:46,352 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:26:46,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-12-22 19:26:46,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147396e7b/3dcf524822c843e1ad995d36520a9246/FLAG0b58b94d5 [2021-12-22 19:26:46,765 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:26:46,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-12-22 19:26:46,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147396e7b/3dcf524822c843e1ad995d36520a9246/FLAG0b58b94d5 [2021-12-22 19:26:47,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147396e7b/3dcf524822c843e1ad995d36520a9246 [2021-12-22 19:26:47,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:26:47,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:26:47,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:26:47,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:26:47,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:26:47,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1590b18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47, skipping insertion in model container [2021-12-22 19:26:47,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:26:47,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:26:47,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:26:47,376 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:26:47,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:26:47,390 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:26:47,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47 WrapperNode [2021-12-22 19:26:47,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:26:47,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:26:47,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:26:47,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:26:47,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,409 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-12-22 19:26:47,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:26:47,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:26:47,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:26:47,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:26:47,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:26:47,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:26:47,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:26:47,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:26:47,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (1/1) ... [2021-12-22 19:26:47,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:26:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:47,472 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) [2021-12-22 19:26:47,486 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 [2021-12-22 19:26:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:26:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:26:47,552 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:26:47,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:26:47,623 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:26:47,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:26:47,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:26:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:47 BoogieIcfgContainer [2021-12-22 19:26:47,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:26:47,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:26:47,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:26:47,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:26:47,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:26:47" (1/3) ... [2021-12-22 19:26:47,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6831d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:26:47, skipping insertion in model container [2021-12-22 19:26:47,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:26:47" (2/3) ... [2021-12-22 19:26:47,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6831d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:26:47, skipping insertion in model container [2021-12-22 19:26:47,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:47" (3/3) ... [2021-12-22 19:26:47,635 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-12-22 19:26:47,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:26:47,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-22 19:26:47,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:26:47,671 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 [2021-12-22 19:26:47,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-22 19:26:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 19:26:47,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:47,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 19:26:47,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2021-12-22 19:26:47,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:47,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541141746] [2021-12-22 19:26:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:47,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:47,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541141746] [2021-12-22 19:26:47,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541141746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:26:47,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:26:47,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:26:47,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170322609] [2021-12-22 19:26:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:26:47,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:26:47,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:26:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:26:47,825 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:47,854 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-12-22 19:26:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:26:47,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 19:26:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:47,862 INFO L225 Difference]: With dead ends: 50 [2021-12-22 19:26:47,862 INFO L226 Difference]: Without dead ends: 24 [2021-12-22 19:26:47,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:26:47,872 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 31 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 [2021-12-22 19:26:47,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 31 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:47,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-22 19:26:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-12-22 19:26:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.6) internal successors, (24), 20 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) [2021-12-22 19:26:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-22 19:26:47,894 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2021-12-22 19:26:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:47,894 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-22 19:26:47,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-22 19:26:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 19:26:47,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:47,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 19:26:47,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:26:47,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash 28699753, now seen corresponding path program 1 times [2021-12-22 19:26:47,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:47,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707723468] [2021-12-22 19:26:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:47,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:47,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707723468] [2021-12-22 19:26:47,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707723468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:26:47,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:26:47,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:26:47,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024956032] [2021-12-22 19:26:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:26:47,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:26:47,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:26:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:26:47,915 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:47,931 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-12-22 19:26:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:26:47,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-22 19:26:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:47,936 INFO L225 Difference]: With dead ends: 22 [2021-12-22 19:26:47,936 INFO L226 Difference]: Without dead ends: 21 [2021-12-22 19:26:47,936 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 [2021-12-22 19:26:47,937 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:47,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-22 19:26:47,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-22 19:26:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 20 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) [2021-12-22 19:26:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-12-22 19:26:47,941 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 5 [2021-12-22 19:26:47,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:47,941 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-12-22 19:26:47,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-12-22 19:26:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:26:47,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:47,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:26:47,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 19:26:47,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 889692391, now seen corresponding path program 1 times [2021-12-22 19:26:47,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687802816] [2021-12-22 19:26:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:47,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:47,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687802816] [2021-12-22 19:26:47,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687802816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:26:47,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:26:47,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:26:47,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030560534] [2021-12-22 19:26:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:26:47,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:26:47,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:26:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:26:47,962 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:47,993 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-12-22 19:26:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:26:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 19:26:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:47,994 INFO L225 Difference]: With dead ends: 26 [2021-12-22 19:26:47,994 INFO L226 Difference]: Without dead ends: 24 [2021-12-22 19:26:47,995 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 [2021-12-22 19:26:47,996 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:47,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-22 19:26:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-12-22 19:26:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-22 19:26:47,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 6 [2021-12-22 19:26:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:48,000 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-22 19:26:48,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-22 19:26:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:26:48,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:48,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:26:48,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 19:26:48,001 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 295897673, now seen corresponding path program 1 times [2021-12-22 19:26:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102432299] [2021-12-22 19:26:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:48,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:48,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102432299] [2021-12-22 19:26:48,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102432299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:26:48,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:26:48,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:26:48,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441585315] [2021-12-22 19:26:48,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:26:48,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:26:48,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:48,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:26:48,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:26:48,022 INFO L87 Difference]: Start difference. First operand 19 states and 20 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) [2021-12-22 19:26:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:48,029 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-22 19:26:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:26:48,030 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 [2021-12-22 19:26:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:48,030 INFO L225 Difference]: With dead ends: 19 [2021-12-22 19:26:48,031 INFO L226 Difference]: Without dead ends: 18 [2021-12-22 19:26:48,031 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 [2021-12-22 19:26:48,033 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:48,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:48,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-22 19:26:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-22 19:26:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-22 19:26:48,040 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-12-22 19:26:48,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:48,041 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-22 19:26:48,041 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) [2021-12-22 19:26:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-22 19:26:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 19:26:48,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:48,041 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:26:48,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 19:26:48,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1814725954, now seen corresponding path program 1 times [2021-12-22 19:26:48,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:48,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468172444] [2021-12-22 19:26:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:48,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468172444] [2021-12-22 19:26:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468172444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793894602] [2021-12-22 19:26:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:48,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:48,076 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) [2021-12-22 19:26:48,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:26:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:26:48,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793894602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:48,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:48,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-12-22 19:26:48,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289703957] [2021-12-22 19:26:48,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:48,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 19:26:48,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:26:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:26:48,346 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2021-12-22 19:26:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:48,429 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2021-12-22 19:26:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:26:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) Word has length 11 [2021-12-22 19:26:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:48,431 INFO L225 Difference]: With dead ends: 44 [2021-12-22 19:26:48,431 INFO L226 Difference]: Without dead ends: 33 [2021-12-22 19:26:48,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:26:48,438 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:48,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 16 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-22 19:26:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2021-12-22 19:26:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) 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) [2021-12-22 19:26:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-22 19:26:48,448 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2021-12-22 19:26:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:48,448 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-22 19:26:48,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2021-12-22 19:26:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-22 19:26:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 19:26:48,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:48,450 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1] [2021-12-22 19:26:48,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:48,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:48,663 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 222881243, now seen corresponding path program 1 times [2021-12-22 19:26:48,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:48,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766651653] [2021-12-22 19:26:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:48,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:48,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766651653] [2021-12-22 19:26:48,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766651653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182022680] [2021-12-22 19:26:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:48,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:48,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:48,698 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) [2021-12-22 19:26:48,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:26:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:48,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:26:48,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:48,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182022680] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:48,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:48,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 19:26:48,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747631908] [2021-12-22 19:26:48,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:48,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 19:26:48,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:26:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:26:48,806 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:48,842 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2021-12-22 19:26:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:26:48,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 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 17 [2021-12-22 19:26:48,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:48,843 INFO L225 Difference]: With dead ends: 77 [2021-12-22 19:26:48,843 INFO L226 Difference]: Without dead ends: 76 [2021-12-22 19:26:48,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:26:48,844 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:48,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 48 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-22 19:26:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2021-12-22 19:26:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.234375) internal successors, (79), 65 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2021-12-22 19:26:48,850 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 17 [2021-12-22 19:26:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:48,851 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2021-12-22 19:26:48,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2021-12-22 19:26:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 19:26:48,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:48,851 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-22 19:26:48,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:49,076 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,SelfDestructingSolverStorable5 [2021-12-22 19:26:49,077 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -559304034, now seen corresponding path program 1 times [2021-12-22 19:26:49,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461339723] [2021-12-22 19:26:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:49,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 19:26:49,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:49,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461339723] [2021-12-22 19:26:49,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461339723] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:49,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444376282] [2021-12-22 19:26:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:49,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:49,113 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) [2021-12-22 19:26:49,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 19:26:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:26:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:49,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:49,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444376282] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:49,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:49,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2021-12-22 19:26:49,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665639035] [2021-12-22 19:26:49,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:49,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 19:26:49,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:49,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 19:26:49,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-12-22 19:26:49,235 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:49,273 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2021-12-22 19:26:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 19:26:49,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-12-22 19:26:49,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:49,275 INFO L225 Difference]: With dead ends: 156 [2021-12-22 19:26:49,275 INFO L226 Difference]: Without dead ends: 103 [2021-12-22 19:26:49,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-12-22 19:26:49,276 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:49,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-22 19:26:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-22 19:26:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-12-22 19:26:49,283 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 19 [2021-12-22 19:26:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-12-22 19:26:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-12-22 19:26:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 19:26:49,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:49,285 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1] [2021-12-22 19:26:49,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:49,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:49,505 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:49,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1014921281, now seen corresponding path program 2 times [2021-12-22 19:26:49,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:49,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812136551] [2021-12-22 19:26:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:49,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:49,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:49,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812136551] [2021-12-22 19:26:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812136551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:49,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582871277] [2021-12-22 19:26:49,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:26:49,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:49,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:49,583 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) [2021-12-22 19:26:49,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 19:26:49,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:26:49,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:49,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 19:26:49,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:49,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:49,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582871277] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:49,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:49,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-22 19:26:49,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971151772] [2021-12-22 19:26:49,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:49,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 19:26:49,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 19:26:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:26:49,801 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:49,885 INFO L93 Difference]: Finished difference Result 552 states and 645 transitions. [2021-12-22 19:26:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 19:26:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 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 41 [2021-12-22 19:26:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:49,887 INFO L225 Difference]: With dead ends: 552 [2021-12-22 19:26:49,887 INFO L226 Difference]: Without dead ends: 551 [2021-12-22 19:26:49,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:26:49,888 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:49,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 83 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:26:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-12-22 19:26:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 364. [2021-12-22 19:26:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 1.1657458563535912) internal successors, (422), 363 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 422 transitions. [2021-12-22 19:26:49,923 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 422 transitions. Word has length 41 [2021-12-22 19:26:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:49,923 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 422 transitions. [2021-12-22 19:26:49,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 422 transitions. [2021-12-22 19:26:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 19:26:49,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:49,925 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1, 1] [2021-12-22 19:26:49,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:50,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:50,141 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1694769756, now seen corresponding path program 2 times [2021-12-22 19:26:50,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37695957] [2021-12-22 19:26:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:50,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 19:26:50,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37695957] [2021-12-22 19:26:50,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37695957] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059052541] [2021-12-22 19:26:50,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:26:50,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:50,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:50,187 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) [2021-12-22 19:26:50,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 19:26:50,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:26:50,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:26:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 19:26:50,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 19:26:50,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059052541] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:50,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:50,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-22 19:26:50,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379940452] [2021-12-22 19:26:50,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:50,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 19:26:50,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:26:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:26:50,394 INFO L87 Difference]: Start difference. First operand 364 states and 422 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:50,428 INFO L93 Difference]: Finished difference Result 586 states and 681 transitions. [2021-12-22 19:26:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 19:26:50,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-22 19:26:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:50,429 INFO L225 Difference]: With dead ends: 586 [2021-12-22 19:26:50,429 INFO L226 Difference]: Without dead ends: 244 [2021-12-22 19:26:50,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:26:50,430 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:50,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:26:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-22 19:26:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-22 19:26:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 242 states have (on average 1.1363636363636365) internal successors, (275), 243 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 275 transitions. [2021-12-22 19:26:50,439 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 275 transitions. Word has length 55 [2021-12-22 19:26:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:50,447 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 275 transitions. [2021-12-22 19:26:50,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 275 transitions. [2021-12-22 19:26:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-22 19:26:50,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:50,451 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1] [2021-12-22 19:26:50,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:50,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:50,652 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -204765305, now seen corresponding path program 3 times [2021-12-22 19:26:50,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:50,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207166603] [2021-12-22 19:26:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:50,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:50,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207166603] [2021-12-22 19:26:50,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207166603] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158551657] [2021-12-22 19:26:50,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:26:50,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:50,877 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) [2021-12-22 19:26:50,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 19:26:50,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-22 19:26:50,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:50,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 19:26:50,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:51,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:51,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158551657] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:51,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:51,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-12-22 19:26:51,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821101922] [2021-12-22 19:26:51,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:51,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 19:26:51,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 19:26:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-22 19:26:51,407 INFO L87 Difference]: Start difference. First operand 244 states and 275 transitions. Second operand has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:51,624 INFO L93 Difference]: Finished difference Result 2183 states and 2554 transitions. [2021-12-22 19:26:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-22 19:26:51,625 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 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 89 [2021-12-22 19:26:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:51,631 INFO L225 Difference]: With dead ends: 2183 [2021-12-22 19:26:51,644 INFO L226 Difference]: Without dead ends: 2182 [2021-12-22 19:26:51,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-22 19:26:51,646 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 280 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:51,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 183 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:26:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2021-12-22 19:26:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 928. [2021-12-22 19:26:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 926 states have (on average 1.1684665226781858) internal successors, (1082), 927 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1082 transitions. [2021-12-22 19:26:51,727 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1082 transitions. Word has length 89 [2021-12-22 19:26:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:51,728 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1082 transitions. [2021-12-22 19:26:51,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1082 transitions. [2021-12-22 19:26:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 19:26:51,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:51,733 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 10, 5, 5, 5, 1, 1, 1] [2021-12-22 19:26:51,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:51,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:51,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1775172658, now seen corresponding path program 3 times [2021-12-22 19:26:51,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:51,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246750814] [2021-12-22 19:26:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:51,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 178 proven. 290 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 19:26:52,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246750814] [2021-12-22 19:26:52,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246750814] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317732398] [2021-12-22 19:26:52,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:26:52,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:52,088 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) [2021-12-22 19:26:52,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 19:26:52,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-22 19:26:52,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 19:26:52,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 244 proven. 88 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-22 19:26:52,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 244 proven. 88 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-22 19:26:52,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317732398] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:52,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:52,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 27 [2021-12-22 19:26:52,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623975358] [2021-12-22 19:26:52,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-22 19:26:52,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-22 19:26:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-12-22 19:26:52,584 INFO L87 Difference]: Start difference. First operand 928 states and 1082 transitions. Second operand has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:52,698 INFO L93 Difference]: Finished difference Result 2458 states and 2984 transitions. [2021-12-22 19:26:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 19:26:52,698 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 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 91 [2021-12-22 19:26:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:52,702 INFO L225 Difference]: With dead ends: 2458 [2021-12-22 19:26:52,702 INFO L226 Difference]: Without dead ends: 1588 [2021-12-22 19:26:52,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-12-22 19:26:52,704 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 171 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:52,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 96 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:26:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-12-22 19:26:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1588. [2021-12-22 19:26:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1586 states have (on average 1.16078184110971) internal successors, (1841), 1587 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 1841 transitions. [2021-12-22 19:26:52,758 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 1841 transitions. Word has length 91 [2021-12-22 19:26:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:52,758 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 1841 transitions. [2021-12-22 19:26:52,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 1841 transitions. [2021-12-22 19:26:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 19:26:52,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:52,760 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 14, 14, 14, 12, 12, 12, 1, 1, 1] [2021-12-22 19:26:52,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-22 19:26:52,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:52,975 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1356559473, now seen corresponding path program 4 times [2021-12-22 19:26:52,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:52,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466158828] [2021-12-22 19:26:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:52,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 662 proven. 420 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:53,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:53,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466158828] [2021-12-22 19:26:53,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466158828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:53,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892011395] [2021-12-22 19:26:53,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:26:53,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:53,107 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) [2021-12-22 19:26:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 19:26:53,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:26:53,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:53,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 19:26:53,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 662 proven. 420 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:53,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 662 proven. 420 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:53,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892011395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:53,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:53,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2021-12-22 19:26:53,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473960071] [2021-12-22 19:26:53,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:53,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-22 19:26:53,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-22 19:26:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-12-22 19:26:53,739 INFO L87 Difference]: Start difference. First operand 1588 states and 1841 transitions. Second operand has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:53,840 INFO L93 Difference]: Finished difference Result 2473 states and 2873 transitions. [2021-12-22 19:26:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-22 19:26:53,841 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 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 157 [2021-12-22 19:26:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:53,843 INFO L225 Difference]: With dead ends: 2473 [2021-12-22 19:26:53,843 INFO L226 Difference]: Without dead ends: 955 [2021-12-22 19:26:53,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-12-22 19:26:53,845 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:53,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 100 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:26:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-12-22 19:26:53,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 955. [2021-12-22 19:26:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 953 states have (on average 1.1416579223504721) internal successors, (1088), 954 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1088 transitions. [2021-12-22 19:26:53,865 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1088 transitions. Word has length 157 [2021-12-22 19:26:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:53,865 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1088 transitions. [2021-12-22 19:26:53,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1088 transitions. [2021-12-22 19:26:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-22 19:26:53,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:53,866 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1] [2021-12-22 19:26:53,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-22 19:26:54,082 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,SelfDestructingSolverStorable11 [2021-12-22 19:26:54,083 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1976404201, now seen corresponding path program 4 times [2021-12-22 19:26:54,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:54,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556017492] [2021-12-22 19:26:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:54,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:54,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:54,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556017492] [2021-12-22 19:26:54,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556017492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:54,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764572926] [2021-12-22 19:26:54,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:26:54,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:54,521 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) [2021-12-22 19:26:54,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:26:54,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:26:54,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:54,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 19:26:54,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:54,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:55,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764572926] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:55,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:55,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-12-22 19:26:55,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683693683] [2021-12-22 19:26:55,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:55,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-22 19:26:55,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-22 19:26:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-22 19:26:55,765 INFO L87 Difference]: Start difference. First operand 955 states and 1088 transitions. Second operand has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:56,334 INFO L93 Difference]: Finished difference Result 15963 states and 18627 transitions. [2021-12-22 19:26:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-22 19:26:56,334 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 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 185 [2021-12-22 19:26:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:56,374 INFO L225 Difference]: With dead ends: 15963 [2021-12-22 19:26:56,374 INFO L226 Difference]: Without dead ends: 15962 [2021-12-22 19:26:56,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-22 19:26:56,380 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 483 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:56,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 408 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 19:26:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2021-12-22 19:26:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 4456. [2021-12-22 19:26:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4454 states have (on average 1.1650202065559048) internal successors, (5189), 4455 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5189 transitions. [2021-12-22 19:26:56,679 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5189 transitions. Word has length 185 [2021-12-22 19:26:56,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:56,679 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 5189 transitions. [2021-12-22 19:26:56,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.857142857142857) internal successors, (369), 64 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5189 transitions. [2021-12-22 19:26:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-22 19:26:56,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:56,682 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 26, 26, 26, 14, 14, 14, 1, 1, 1] [2021-12-22 19:26:56,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-22 19:26:56,899 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,SelfDestructingSolverStorable12 [2021-12-22 19:26:56,900 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1546498899, now seen corresponding path program 5 times [2021-12-22 19:26:56,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264496381] [2021-12-22 19:26:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:56,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3913 backedges. 1404 proven. 2002 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:57,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264496381] [2021-12-22 19:26:57,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264496381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:57,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693914622] [2021-12-22 19:26:57,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 19:26:57,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:57,234 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) [2021-12-22 19:26:57,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:26:57,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-12-22 19:26:57,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:57,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-22 19:26:57,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3913 backedges. 1404 proven. 2002 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:57,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3913 backedges. 1404 proven. 2002 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-22 19:26:58,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693914622] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:58,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:58,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 53 [2021-12-22 19:26:58,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101720104] [2021-12-22 19:26:58,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:58,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-22 19:26:58,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-22 19:26:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-12-22 19:26:58,334 INFO L87 Difference]: Start difference. First operand 4456 states and 5189 transitions. Second operand has 53 states, 53 states have (on average 5.90566037735849) internal successors, (313), 53 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:58,505 INFO L93 Difference]: Finished difference Result 6799 states and 7930 transitions. [2021-12-22 19:26:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-22 19:26:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.90566037735849) internal successors, (313), 53 states have internal predecessors, (313), 0 states have call successors, (0), 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 241 [2021-12-22 19:26:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:58,512 INFO L225 Difference]: With dead ends: 6799 [2021-12-22 19:26:58,512 INFO L226 Difference]: Without dead ends: 2497 [2021-12-22 19:26:58,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-12-22 19:26:58,517 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 205 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:58,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 188 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:26:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-12-22 19:26:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2497. [2021-12-22 19:26:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 2495 states have (on average 1.1503006012024048) internal successors, (2870), 2496 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 2870 transitions. [2021-12-22 19:26:58,587 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 2870 transitions. Word has length 241 [2021-12-22 19:26:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:58,587 INFO L470 AbstractCegarLoop]: Abstraction has 2497 states and 2870 transitions. [2021-12-22 19:26:58,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.90566037735849) internal successors, (313), 53 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 2870 transitions. [2021-12-22 19:26:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-22 19:26:58,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:58,592 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1, 1] [2021-12-22 19:26:58,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:58,811 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,SelfDestructingSolverStorable13 [2021-12-22 19:26:58,811 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1640764983, now seen corresponding path program 5 times [2021-12-22 19:26:58,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:58,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438876926] [2021-12-22 19:26:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:58,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:00,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438876926] [2021-12-22 19:27:00,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438876926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602116518] [2021-12-22 19:27:00,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 19:27:00,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:00,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:00,432 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) [2021-12-22 19:27:00,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 19:27:00,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2021-12-22 19:27:00,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:27:00,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-22 19:27:00,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 11191 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-12-22 19:27:02,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:27:02,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602116518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:27:02,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 19:27:02,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [64] total 117 [2021-12-22 19:27:02,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721011179] [2021-12-22 19:27:02,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:27:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-22 19:27:02,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-22 19:27:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3510, Invalid=10062, Unknown=0, NotChecked=0, Total=13572 [2021-12-22 19:27:02,362 INFO L87 Difference]: Start difference. First operand 2497 states and 2870 transitions. Second operand has 54 states, 54 states have (on average 5.87037037037037) internal successors, (317), 54 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:02,670 INFO L93 Difference]: Finished difference Result 2624 states and 3024 transitions. [2021-12-22 19:27:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-22 19:27:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.87037037037037) internal successors, (317), 54 states have internal predecessors, (317), 0 states have call successors, (0), 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 377 [2021-12-22 19:27:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:02,671 INFO L225 Difference]: With dead ends: 2624 [2021-12-22 19:27:02,671 INFO L226 Difference]: Without dead ends: 431 [2021-12-22 19:27:02,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3224 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3510, Invalid=10062, Unknown=0, NotChecked=0, Total=13572 [2021-12-22 19:27:02,675 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 25 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:02,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 642 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:27:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-22 19:27:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 392. [2021-12-22 19:27:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.0025575447570332) internal successors, (392), 391 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2021-12-22 19:27:02,682 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 377 [2021-12-22 19:27:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:02,683 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2021-12-22 19:27:02,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.87037037037037) internal successors, (317), 54 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2021-12-22 19:27:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-12-22 19:27:02,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:02,686 INFO L514 BasicCegarLoop]: trace histogram [65, 64, 64, 51, 51, 51, 14, 14, 14, 1, 1, 1] [2021-12-22 19:27:02,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:02,905 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,SelfDestructingSolverStorable14 [2021-12-22 19:27:02,906 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2025652382, now seen corresponding path program 6 times [2021-12-22 19:27:02,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384130567] [2021-12-22 19:27:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:02,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 0 proven. 10988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:04,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:04,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384130567] [2021-12-22 19:27:04,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384130567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:04,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598060092] [2021-12-22 19:27:04,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-22 19:27:04,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:04,413 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) [2021-12-22 19:27:04,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 19:27:04,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-12-22 19:27:04,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:27:04,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 19:27:04,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 2978 proven. 560 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-12-22 19:27:04,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10988 backedges. 2978 proven. 560 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-12-22 19:27:05,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598060092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:05,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:05,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 16, 16] total 81 [2021-12-22 19:27:05,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089217464] [2021-12-22 19:27:05,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:05,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-22 19:27:05,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-22 19:27:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-12-22 19:27:05,676 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand has 82 states, 81 states have (on average 6.012345679012346) internal successors, (487), 82 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) [2021-12-22 19:27:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:06,037 INFO L93 Difference]: Finished difference Result 489 states and 504 transitions. [2021-12-22 19:27:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-12-22 19:27:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 6.012345679012346) internal successors, (487), 82 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 391 [2021-12-22 19:27:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:06,039 INFO L225 Difference]: With dead ends: 489 [2021-12-22 19:27:06,039 INFO L226 Difference]: Without dead ends: 488 [2021-12-22 19:27:06,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-12-22 19:27:06,041 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 803 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:06,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 265 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:27:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-12-22 19:27:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2021-12-22 19:27:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.002053388090349) internal successors, (488), 487 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 488 transitions. [2021-12-22 19:27:06,050 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 488 transitions. Word has length 391 [2021-12-22 19:27:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:06,051 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 488 transitions. [2021-12-22 19:27:06,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 6.012345679012346) internal successors, (487), 82 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) [2021-12-22 19:27:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 488 transitions. [2021-12-22 19:27:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-12-22 19:27:06,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:06,056 INFO L514 BasicCegarLoop]: trace histogram [81, 80, 80, 51, 51, 51, 30, 30, 30, 1, 1, 1] [2021-12-22 19:27:06,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:06,273 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,SelfDestructingSolverStorable15 [2021-12-22 19:27:06,273 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1235249202, now seen corresponding path program 7 times [2021-12-22 19:27:06,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:06,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095603008] [2021-12-22 19:27:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:06,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 0 proven. 16300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:07,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:07,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095603008] [2021-12-22 19:27:07,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095603008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:07,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970902963] [2021-12-22 19:27:07,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-22 19:27:07,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:07,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:07,672 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) [2021-12-22 19:27:07,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 19:27:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:07,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-22 19:27:07,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 0 proven. 16300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:08,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 0 proven. 16300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:14,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970902963] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:14,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:14,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 163 [2021-12-22 19:27:14,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850481735] [2021-12-22 19:27:14,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:14,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2021-12-22 19:27:14,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2021-12-22 19:27:14,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2021-12-22 19:27:14,602 INFO L87 Difference]: Start difference. First operand 488 states and 488 transitions. Second operand has 164 states, 163 states have (on average 5.969325153374233) internal successors, (973), 164 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:16,538 INFO L93 Difference]: Finished difference Result 981 states and 1062 transitions. [2021-12-22 19:27:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2021-12-22 19:27:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 163 states have (on average 5.969325153374233) internal successors, (973), 164 states have internal predecessors, (973), 0 states have call successors, (0), 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 487 [2021-12-22 19:27:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:16,541 INFO L225 Difference]: With dead ends: 981 [2021-12-22 19:27:16,541 INFO L226 Difference]: Without dead ends: 980 [2021-12-22 19:27:16,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2021-12-22 19:27:16,550 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1824 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:16,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1824 Valid, 506 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 19:27:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-12-22 19:27:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2021-12-22 19:27:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.0010214504596526) internal successors, (980), 979 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 980 transitions. [2021-12-22 19:27:16,594 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 980 transitions. Word has length 487 [2021-12-22 19:27:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:16,594 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 980 transitions. [2021-12-22 19:27:16,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 163 states have (on average 5.969325153374233) internal successors, (973), 164 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 980 transitions. [2021-12-22 19:27:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2021-12-22 19:27:16,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:16,601 INFO L514 BasicCegarLoop]: trace histogram [163, 162, 162, 112, 112, 112, 51, 51, 51, 1, 1, 1] [2021-12-22 19:27:16,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-22 19:27:16,836 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 803429924, now seen corresponding path program 8 times [2021-12-22 19:27:16,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:16,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533148441] [2021-12-22 19:27:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:16,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 67632 backedges. 0 proven. 67632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:22,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533148441] [2021-12-22 19:27:22,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533148441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905382744] [2021-12-22 19:27:22,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:27:22,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:22,917 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) [2021-12-22 19:27:22,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 19:27:23,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:27:23,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:27:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-22 19:27:23,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 67632 backedges. 44176 proven. 12752 refuted. 0 times theorem prover too weak. 10704 trivial. 0 not checked. [2021-12-22 19:27:27,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 67632 backedges. 44176 proven. 12752 refuted. 0 times theorem prover too weak. 10704 trivial. 0 not checked. [2021-12-22 19:27:29,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905382744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:29,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:29,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 55, 55] total 218 [2021-12-22 19:27:29,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563187796] [2021-12-22 19:27:29,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:29,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2021-12-22 19:27:29,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2021-12-22 19:27:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15014, Invalid=32292, Unknown=0, NotChecked=0, Total=47306 [2021-12-22 19:27:29,194 INFO L87 Difference]: Start difference. First operand 980 states and 980 transitions. Second operand has 218 states, 218 states have (on average 6.674311926605505) internal successors, (1455), 218 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:39,024 INFO L93 Difference]: Finished difference Result 980 states and 980 transitions. [2021-12-22 19:27:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-12-22 19:27:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 218 states have (on average 6.674311926605505) internal successors, (1455), 218 states have internal predecessors, (1455), 0 states have call successors, (0), 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 979 [2021-12-22 19:27:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:39,025 INFO L225 Difference]: With dead ends: 980 [2021-12-22 19:27:39,025 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 19:27:39,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2327 GetRequests, 1903 SyntacticMatches, 1 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30423 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=54683, Invalid=125517, Unknown=0, NotChecked=0, Total=180200 [2021-12-22 19:27:39,035 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 511 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:39,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 10 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 19:27:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 19:27:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 19:27:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 19:27:39,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 979 [2021-12-22 19:27:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:39,036 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:27:39,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 218 states have (on average 6.674311926605505) internal successors, (1455), 218 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 19:27:39,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 19:27:39,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-12-22 19:27:39,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-12-22 19:27:39,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-12-22 19:27:39,039 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-12-22 19:27:39,040 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-12-22 19:27:39,040 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-12-22 19:27:39,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:39,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:39,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-12-22 19:27:42,714 INFO L858 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L861 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: true [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-12-22 19:27:42,715 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-12-22 19:27:42,716 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse7 (<= |ULTIMATE.start_main_~y~0#1| 4)) (.cse5 (<= |ULTIMATE.start_main_~y~0#1| 9)) (.cse9 (<= |ULTIMATE.start_main_~y~0#1| 44)) (.cse19 (<= |ULTIMATE.start_main_~y~0#1| 25)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 20)) (.cse14 (<= |ULTIMATE.start_main_~y~0#1| 42)) (.cse17 (<= |ULTIMATE.start_main_~y~0#1| 29)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 31)) (.cse27 (<= |ULTIMATE.start_main_~y~0#1| 23)) (.cse11 (<= |ULTIMATE.start_main_~y~0#1| 27)) (.cse24 (<= |ULTIMATE.start_main_~y~0#1| 49)) (.cse34 (<= |ULTIMATE.start_main_~y~0#1| 6)) (.cse15 (<= |ULTIMATE.start_main_~y~0#1| 13)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 45)) (.cse33 (<= |ULTIMATE.start_main_~y~0#1| 12)) (.cse29 (<= |ULTIMATE.start_main_~y~0#1| 17)) (.cse41 (<= |ULTIMATE.start_main_~y~0#1| 14)) (.cse16 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse40 (<= |ULTIMATE.start_main_~y~0#1| 30)) (.cse42 (<= |ULTIMATE.start_main_~y~0#1| 40)) (.cse25 (<= |ULTIMATE.start_main_~y~0#1| 11)) (.cse44 (<= |ULTIMATE.start_main_~y~0#1| 47)) (.cse38 (<= |ULTIMATE.start_main_~y~0#1| 46)) (.cse18 (<= |ULTIMATE.start_main_~y~0#1| 3)) (.cse26 (<= |ULTIMATE.start_main_~y~0#1| 7)) (.cse49 (<= |ULTIMATE.start_main_~y~0#1| 24)) (.cse43 (<= |ULTIMATE.start_main_~y~0#1| 21)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse12 (<= |ULTIMATE.start_main_~y~0#1| 43)) (.cse20 (<= |ULTIMATE.start_main_~y~0#1| 26)) (.cse36 (<= |ULTIMATE.start_main_~y~0#1| 19)) (.cse47 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse50 (<= |ULTIMATE.start_main_~y~0#1| 0)) (.cse37 (<= |ULTIMATE.start_main_~y~0#1| 18)) (.cse28 (<= |ULTIMATE.start_main_~y~0#1| 48)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 50)) (.cse48 (<= |ULTIMATE.start_main_~y~0#1| 5)) (.cse51 (<= |ULTIMATE.start_main_~y~0#1| 35)) (.cse30 (<= |ULTIMATE.start_main_~y~0#1| 8)) (.cse13 (<= |ULTIMATE.start_main_~y~0#1| 22)) (.cse31 (<= |ULTIMATE.start_main_~y~0#1| 36)) (.cse52 (<= |ULTIMATE.start_main_~y~0#1| 34)) (.cse22 (<= |ULTIMATE.start_main_~y~0#1| 28)) (.cse32 (<= |ULTIMATE.start_main_~y~0#1| 38)) (.cse6 (<= |ULTIMATE.start_main_~y~0#1| 32)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 2147483623)) (.cse45 (<= |ULTIMATE.start_main_~y~0#1| 16)) (.cse39 (<= |ULTIMATE.start_main_~y~0#1| 15)) (.cse35 (<= |ULTIMATE.start_main_~y~0#1| 39)) (.cse46 (<= |ULTIMATE.start_main_~y~0#1| 33)) (.cse0 (<= 51 |ULTIMATE.start_main_~x~0#1|)) (.cse21 (<= |ULTIMATE.start_main_~y~0#1| 41)) (.cse10 (<= |ULTIMATE.start_main_~y~0#1| 37))) (or (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 52) .cse1) (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse2) (and .cse3 (<= |ULTIMATE.start_main_~x~0#1| 82) .cse4 .cse0) (and .cse5 (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) (and .cse6 (<= 32 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 32)) (and .cse7 .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 98)) (and (<= |ULTIMATE.start_main_~x~0#1| 71) .cse3 .cse0 .cse8) (and .cse0 (<= |ULTIMATE.start_main_~x~0#1| 51) (<= |ULTIMATE.start_main_~y~0#1| 51)) (and .cse7 (<= |ULTIMATE.start_main_~x~0#1| 4) (<= 4 |ULTIMATE.start_main_~x~0#1|)) (and .cse9 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 58)) (and .cse10 .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 65)) (and .cse11 (<= 27 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 27)) (and .cse12 (<= 43 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 43)) (and (<= |ULTIMATE.start_main_~x~0#1| 22) (<= 22 |ULTIMATE.start_main_~x~0#1|) .cse13) (and (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (<= |ULTIMATE.start_main_~x~0#1| 103) .cse3 .cse0) (and .cse5 .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 93)) (and (<= |ULTIMATE.start_main_~x~0#1| 60) .cse14 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 89) .cse3 .cse0 .cse15) (and .cse9 (<= |ULTIMATE.start_main_~x~0#1| 44) (<= 44 |ULTIMATE.start_main_~x~0#1|)) (and .cse16 (<= |ULTIMATE.start_main_~x~0#1| 100) .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 29) (<= 29 |ULTIMATE.start_main_~x~0#1|) .cse17) (and .cse3 .cse0 .cse18 (<= |ULTIMATE.start_main_~x~0#1| 99)) (and (<= |ULTIMATE.start_main_~x~0#1| 77) .cse3 .cse19 .cse0) (and .cse20 (<= |ULTIMATE.start_main_~x~0#1| 76) .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 41) .cse21 (<= 41 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 25) .cse19 (<= 25 |ULTIMATE.start_main_~x~0#1|)) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 28) (<= 28 |ULTIMATE.start_main_~x~0#1|)) (and .cse23 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 57)) (and (<= |ULTIMATE.start_main_~x~0#1| 49) (<= 49 |ULTIMATE.start_main_~x~0#1|) .cse24) (and (<= 20 |ULTIMATE.start_main_~x~0#1|) .cse4 (<= |ULTIMATE.start_main_~x~0#1| 20)) (and (<= |ULTIMATE.start_main_~x~0#1| 11) (<= 11 |ULTIMATE.start_main_~x~0#1|) .cse25) (and (<= 7 |ULTIMATE.start_main_~x~0#1|) .cse26 (<= |ULTIMATE.start_main_~x~0#1| 7)) (and (<= 42 |ULTIMATE.start_main_~x~0#1|) .cse14 (<= |ULTIMATE.start_main_~x~0#1| 42)) (and .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 79) .cse27) (and .cse3 (<= |ULTIMATE.start_main_~x~0#1| 73) .cse17 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 48) .cse28 (<= 48 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 31) (<= 31 |ULTIMATE.start_main_~x~0#1|) .cse8) (and (<= 23 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 23) .cse27) (and (<= |ULTIMATE.start_main_~x~0#1| 75) .cse11 .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 85) .cse29 .cse3 .cse0) (and .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 94) .cse30) (and (<= |ULTIMATE.start_main_~x~0#1| 36) (<= 36 |ULTIMATE.start_main_~x~0#1|) .cse31) (and .cse32 (<= |ULTIMATE.start_main_~x~0#1| 38) (<= 38 |ULTIMATE.start_main_~x~0#1|)) (and .cse33 (<= |ULTIMATE.start_main_~x~0#1| 12) (<= 12 |ULTIMATE.start_main_~x~0#1|)) (and (<= 6 |ULTIMATE.start_main_~x~0#1|) .cse34 (<= |ULTIMATE.start_main_~x~0#1| 6)) (and (<= |ULTIMATE.start_main_~x~0#1| 53) .cse24 .cse0) (and .cse34 (<= |ULTIMATE.start_main_~x~0#1| 96) .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 13) .cse15 (<= 13 |ULTIMATE.start_main_~x~0#1|)) (and (<= 39 |ULTIMATE.start_main_~x~0#1|) .cse35 (<= |ULTIMATE.start_main_~x~0#1| 39)) (and .cse23 (<= |ULTIMATE.start_main_~x~0#1| 45) (<= 45 |ULTIMATE.start_main_~x~0#1|)) (and (<= 19 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 19) .cse36) (and (<= |ULTIMATE.start_main_~x~0#1| 84) .cse37 .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 90) .cse33 .cse3 .cse0) (and (<= 46 |ULTIMATE.start_main_~x~0#1|) .cse38 (<= |ULTIMATE.start_main_~x~0#1| 46)) (and .cse39 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 87) .cse0) (and (<= 17 |ULTIMATE.start_main_~x~0#1|) .cse29 (<= |ULTIMATE.start_main_~x~0#1| 17)) (and (<= |ULTIMATE.start_main_~x~0#1| 30) .cse40 (<= 30 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 14) .cse41 (<= 14 |ULTIMATE.start_main_~x~0#1|)) (and .cse3 .cse41 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 88)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse16 (<= |ULTIMATE.start_main_~x~0#1| 2)) (and .cse42 (<= 40 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 40)) (and (<= 21 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 21) .cse43) (and .cse44 (<= |ULTIMATE.start_main_~x~0#1| 55) .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 16) .cse45 (<= 16 |ULTIMATE.start_main_~x~0#1|)) (and .cse3 (<= |ULTIMATE.start_main_~x~0#1| 72) .cse40 .cse0) (and .cse3 .cse46 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 69)) (and .cse42 (<= |ULTIMATE.start_main_~x~0#1| 62) .cse0) (and .cse47 (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 10 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 91) .cse3 .cse25 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 47) .cse44 (<= 47 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 56) .cse38 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 3) .cse18 (<= 3 |ULTIMATE.start_main_~x~0#1|)) (and .cse48 .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 97)) (and .cse26 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 95) .cse0) (and .cse49 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 78) .cse0) (and .cse49 (<= 24 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 24)) (and .cse43 (<= |ULTIMATE.start_main_~x~0#1| 81) .cse3 .cse0) (and .cse3 .cse2 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 101)) (and .cse12 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 59)) (and .cse20 (<= |ULTIMATE.start_main_~x~0#1| 26) (<= 26 |ULTIMATE.start_main_~x~0#1|)) (and .cse3 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 83) .cse36) (and (<= |ULTIMATE.start_main_~x~0#1| 92) .cse47 .cse3 .cse0) (and .cse3 .cse50 .cse0 (<= |ULTIMATE.start_main_~x~0#1| 102)) (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse50 (<= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse37 (<= |ULTIMATE.start_main_~x~0#1| 18) (<= 18 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 67) .cse51 .cse3 .cse0) (and .cse28 (<= |ULTIMATE.start_main_~x~0#1| 54) .cse0) (and (<= 50 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) .cse1) (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5) .cse48) (and (<= |ULTIMATE.start_main_~x~0#1| 35) .cse51 (<= 35 |ULTIMATE.start_main_~x~0#1|)) (and (<= 8 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 8) .cse30) (and .cse3 .cse0 .cse13 (<= |ULTIMATE.start_main_~x~0#1| 80)) (and (<= |ULTIMATE.start_main_~x~0#1| 66) .cse3 .cse0 .cse31) (and .cse3 (<= |ULTIMATE.start_main_~x~0#1| 68) .cse0 .cse52) (and (<= 34 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 34) .cse52) (and .cse22 (<= |ULTIMATE.start_main_~x~0#1| 74) .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 64) .cse32 .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 70) .cse6 .cse3 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 86) .cse3 .cse0 .cse45) (and .cse39 (<= |ULTIMATE.start_main_~x~0#1| 15) (<= 15 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 63) .cse35 .cse0) (and (<= |ULTIMATE.start_main_~x~0#1| 33) .cse46 (<= 33 |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 61) .cse0 .cse21) (and .cse10 (<= |ULTIMATE.start_main_~x~0#1| 37) (<= 37 |ULTIMATE.start_main_~x~0#1|)))) [2021-12-22 19:27:42,716 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2021-12-22 19:27:42,718 INFO L732 BasicCegarLoop]: Path program histogram: [8, 5, 1, 1, 1, 1, 1] [2021-12-22 19:27:42,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 19:27:42,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:27:42 BoogieIcfgContainer [2021-12-22 19:27:42,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 19:27:42,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:27:42,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:27:42,767 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:27:42,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:26:47" (3/4) ... [2021-12-22 19:27:42,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 19:27:42,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 19:27:42,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 19:27:42,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 19:27:42,808 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:27:42,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:27:42,809 INFO L158 Benchmark]: Toolchain (without parser) took 55580.53ms. Allocated memory was 115.3MB in the beginning and 604.0MB in the end (delta: 488.6MB). Free memory was 79.3MB in the beginning and 243.7MB in the end (delta: -164.3MB). Peak memory consumption was 323.8MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,809 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:27:42,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.67ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 92.3MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.91ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 91.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:27:42,810 INFO L158 Benchmark]: Boogie Preprocessor took 9.69ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 90.0MB in the end (delta: 961.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,810 INFO L158 Benchmark]: RCFGBuilder took 209.59ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 81.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,810 INFO L158 Benchmark]: TraceAbstraction took 55136.68ms. Allocated memory was 115.3MB in the beginning and 604.0MB in the end (delta: 488.6MB). Free memory was 81.3MB in the beginning and 246.8MB in the end (delta: -165.5MB). Peak memory consumption was 335.7MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,813 INFO L158 Benchmark]: Witness Printer took 41.44ms. Allocated memory is still 604.0MB. Free memory was 246.8MB in the beginning and 243.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 19:27:42,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.67ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 92.3MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.91ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 91.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.69ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 90.0MB in the end (delta: 961.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.59ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 81.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 55136.68ms. Allocated memory was 115.3MB in the beginning and 604.0MB in the end (delta: 488.6MB). Free memory was 81.3MB in the beginning and 246.8MB in the end (delta: -165.5MB). Peak memory consumption was 335.7MB. Max. memory is 16.1GB. * Witness Printer took 41.44ms. Allocated memory is still 604.0MB. Free memory was 246.8MB in the beginning and 243.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 55.1s, OverallIterations: 18, TraceHistogramMax: 163, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4756 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4756 mSDsluCounter, 2705 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2329 mSDsCounter, 808 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5393 IncrementalHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 808 mSolverCounterUnsat, 376 mSDtfsCounter, 5393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6603 GetRequests, 5576 SyntacticMatches, 1 SemanticMatches, 1026 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33681 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4456occurred in iteration=13, InterpolantAutomatonStates: 779, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 18 MinimizatonAttempts, 13014 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 108 NumberOfFragments, 1167 HoareAnnotationTreeSize, 2 FomulaSimplifications, 1123 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 2 FomulaSimplificationsInter, 7770 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 6304 NumberOfCodeBlocks, 6124 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 9022 ConstructedInterpolants, 0 QuantifiedInterpolants, 22806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4962 ConjunctsInSsa, 379 ConjunctsInUnsatCore, 45 InterpolantComputations, 5 PerfectInterpolantSequences, 152853/336648 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((51 <= x && x <= 52) && y <= 50) || ((x <= 1 && 1 <= x) && y <= 1)) || (((y <= 2147483623 && x <= 82) && y <= 20) && 51 <= x)) || ((y <= 9 && 9 <= x) && x <= 9)) || ((y <= 32 && 32 <= x) && x <= 32)) || (((y <= 4 && y <= 2147483623) && 51 <= x) && x <= 98)) || (((x <= 71 && y <= 2147483623) && 51 <= x) && y <= 31)) || ((51 <= x && x <= 51) && y <= 51)) || ((y <= 4 && x <= 4) && 4 <= x)) || ((y <= 44 && 51 <= x) && x <= 58)) || (((y <= 37 && y <= 2147483623) && 51 <= x) && x <= 65)) || ((y <= 27 && 27 <= x) && x <= 27)) || ((y <= 43 && 43 <= x) && x <= 43)) || ((x <= 22 && 22 <= x) && y <= 22)) || (((y + 1 <= 0 && x <= 103) && y <= 2147483623) && 51 <= x)) || (((y <= 9 && y <= 2147483623) && 51 <= x) && x <= 93)) || ((x <= 60 && y <= 42) && 51 <= x)) || (((x <= 89 && y <= 2147483623) && 51 <= x) && y <= 13)) || ((y <= 44 && x <= 44) && 44 <= x)) || (((y <= 2 && x <= 100) && y <= 2147483623) && 51 <= x)) || ((x <= 29 && 29 <= x) && y <= 29)) || (((y <= 2147483623 && 51 <= x) && y <= 3) && x <= 99)) || (((x <= 77 && y <= 2147483623) && y <= 25) && 51 <= x)) || (((y <= 26 && x <= 76) && y <= 2147483623) && 51 <= x)) || ((x <= 41 && y <= 41) && 41 <= x)) || ((x <= 25 && y <= 25) && 25 <= x)) || ((y <= 28 && x <= 28) && 28 <= x)) || ((y <= 45 && 51 <= x) && x <= 57)) || ((x <= 49 && 49 <= x) && y <= 49)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 11 && 11 <= x) && y <= 11)) || ((7 <= x && y <= 7) && x <= 7)) || ((42 <= x && y <= 42) && x <= 42)) || (((y <= 2147483623 && 51 <= x) && x <= 79) && y <= 23)) || (((y <= 2147483623 && x <= 73) && y <= 29) && 51 <= x)) || ((x <= 48 && y <= 48) && 48 <= x)) || ((x <= 31 && 31 <= x) && y <= 31)) || ((23 <= x && x <= 23) && y <= 23)) || (((x <= 75 && y <= 27) && y <= 2147483623) && 51 <= x)) || (((x <= 85 && y <= 17) && y <= 2147483623) && 51 <= x)) || (((y <= 2147483623 && 51 <= x) && x <= 94) && y <= 8)) || ((x <= 36 && 36 <= x) && y <= 36)) || ((y <= 38 && x <= 38) && 38 <= x)) || ((y <= 12 && x <= 12) && 12 <= x)) || ((6 <= x && y <= 6) && x <= 6)) || ((x <= 53 && y <= 49) && 51 <= x)) || (((y <= 6 && x <= 96) && y <= 2147483623) && 51 <= x)) || ((x <= 13 && y <= 13) && 13 <= x)) || ((39 <= x && y <= 39) && x <= 39)) || ((y <= 45 && x <= 45) && 45 <= x)) || ((19 <= x && x <= 19) && y <= 19)) || (((x <= 84 && y <= 18) && y <= 2147483623) && 51 <= x)) || (((x <= 90 && y <= 12) && y <= 2147483623) && 51 <= x)) || ((46 <= x && y <= 46) && x <= 46)) || (((y <= 15 && y <= 2147483623) && x <= 87) && 51 <= x)) || ((17 <= x && y <= 17) && x <= 17)) || ((x <= 30 && y <= 30) && 30 <= x)) || ((x <= 14 && y <= 14) && 14 <= x)) || (((y <= 2147483623 && y <= 14) && 51 <= x) && x <= 88)) || ((2 <= x && y <= 2) && x <= 2)) || ((y <= 40 && 40 <= x) && x <= 40)) || ((21 <= x && x <= 21) && y <= 21)) || ((y <= 47 && x <= 55) && 51 <= x)) || ((x <= 16 && y <= 16) && 16 <= x)) || (((y <= 2147483623 && x <= 72) && y <= 30) && 51 <= x)) || (((y <= 2147483623 && y <= 33) && 51 <= x) && x <= 69)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 10 && x <= 10) && 10 <= x)) || (((x <= 91 && y <= 2147483623) && y <= 11) && 51 <= x)) || ((x <= 47 && y <= 47) && 47 <= x)) || ((x <= 56 && y <= 46) && 51 <= x)) || ((x <= 3 && y <= 3) && 3 <= x)) || (((y <= 5 && y <= 2147483623) && 51 <= x) && x <= 97)) || (((y <= 7 && y <= 2147483623) && x <= 95) && 51 <= x)) || (((y <= 24 && y <= 2147483623) && x <= 78) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 24)) || (((y <= 21 && x <= 81) && y <= 2147483623) && 51 <= x)) || (((y <= 2147483623 && y <= 1) && 51 <= x) && x <= 101)) || ((y <= 43 && 51 <= x) && x <= 59)) || ((y <= 26 && x <= 26) && 26 <= x)) || (((y <= 2147483623 && 51 <= x) && x <= 83) && y <= 19)) || (((x <= 92 && y <= 10) && y <= 2147483623) && 51 <= x)) || (((y <= 2147483623 && y <= 0) && 51 <= x) && x <= 102)) || (((0 <= x && 0 <= y) && y <= 0) && x <= 0)) || ((y <= 18 && x <= 18) && 18 <= x)) || (((x <= 67 && y <= 35) && y <= 2147483623) && 51 <= x)) || ((y <= 48 && x <= 54) && 51 <= x)) || ((50 <= x && x <= 50) && y <= 50)) || ((5 <= x && x <= 5) && y <= 5)) || ((x <= 35 && y <= 35) && 35 <= x)) || ((8 <= x && x <= 8) && y <= 8)) || (((y <= 2147483623 && 51 <= x) && y <= 22) && x <= 80)) || (((x <= 66 && y <= 2147483623) && 51 <= x) && y <= 36)) || (((y <= 2147483623 && x <= 68) && 51 <= x) && y <= 34)) || ((34 <= x && x <= 34) && y <= 34)) || (((y <= 28 && x <= 74) && y <= 2147483623) && 51 <= x)) || (((x <= 64 && y <= 38) && y <= 2147483623) && 51 <= x)) || (((x <= 70 && y <= 32) && y <= 2147483623) && 51 <= x)) || (((x <= 86 && y <= 2147483623) && 51 <= x) && y <= 16)) || ((y <= 15 && x <= 15) && 15 <= x)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((x <= 33 && y <= 33) && 33 <= x)) || ((x <= 61 && 51 <= x) && y <= 41)) || ((y <= 37 && x <= 37) && 37 <= x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-22 19:27:42,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE