./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/twisted.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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:02:32,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:02:32,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:02:32,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:02:32,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:02:32,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:02:32,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:02:32,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:02:32,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:02:32,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:02:32,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:02:32,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:02:32,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:02:32,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:02:32,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:02:32,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:02:32,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:02:32,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:02:32,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:02:32,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:02:32,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:02:32,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:02:32,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:02:32,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:02:32,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:02:32,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:02:32,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:02:32,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:02:32,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:02:32,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:02:32,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:02:32,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:02:32,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:02:32,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:02:32,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:02:32,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:02:32,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:02:32,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:02:32,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:02:32,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:02:32,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:02:32,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-16 09:02:32,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:02:32,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:02:32,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:02:32,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:02:32,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:02:32,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:02:32,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:02:32,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:02:32,299 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:02:32,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:02:32,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:02:32,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:02:32,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:02:32,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:02:32,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:02:32,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:02:32,301 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:02:32,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:02:32,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:02:32,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:02:32,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:02:32,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:02:32,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:02:32,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:02:32,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:02:32,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:02:32,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:02:32,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:02:32,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:02:32,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:02:32,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:02:32,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2021-12-16 09:02:32,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:02:32,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:02:32,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:02:32,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:02:32,523 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:02:32,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/twisted.c [2021-12-16 09:02:32,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268668d48/b74549df5e4e481caacecb453ec07574/FLAG75fcc12d9 [2021-12-16 09:02:32,878 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:02:32,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/twisted.c [2021-12-16 09:02:32,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268668d48/b74549df5e4e481caacecb453ec07574/FLAG75fcc12d9 [2021-12-16 09:02:33,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268668d48/b74549df5e4e481caacecb453ec07574 [2021-12-16 09:02:33,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:02:33,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:02:33,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:02:33,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:02:33,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:02:33,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f9f42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33, skipping insertion in model container [2021-12-16 09:02:33,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:02:33,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:02:33,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:02:33,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:02:33,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:02:33,501 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:02:33,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33 WrapperNode [2021-12-16 09:02:33,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:02:33,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:02:33,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:02:33,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:02:33,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,526 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2021-12-16 09:02:33,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:02:33,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:02:33,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:02:33,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:02:33,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:02:33,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:02:33,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:02:33,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:02:33,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (1/1) ... [2021-12-16 09:02:33,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:02:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:33,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 09:02:33,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 09:02:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:02:33,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:02:33,643 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:02:33,644 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:02:33,740 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:02:33,746 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:02:33,746 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 09:02:33,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:02:33 BoogieIcfgContainer [2021-12-16 09:02:33,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:02:33,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:02:33,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:02:33,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:02:33,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:02:33" (1/3) ... [2021-12-16 09:02:33,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9f41a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:02:33, skipping insertion in model container [2021-12-16 09:02:33,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:33" (2/3) ... [2021-12-16 09:02:33,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9f41a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:02:33, skipping insertion in model container [2021-12-16 09:02:33,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:02:33" (3/3) ... [2021-12-16 09:02:33,763 INFO L111 eAbstractionObserver]: Analyzing ICFG twisted.c [2021-12-16 09:02:33,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:02:33,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-16 09:02:33,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:02:33,845 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 09:02:33,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-16 09:02:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 09:02:33,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:33,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 09:02:33,869 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash 28694852, now seen corresponding path program 1 times [2021-12-16 09:02:33,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551736210] [2021-12-16 09:02:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:33,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551736210] [2021-12-16 09:02:34,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551736210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:34,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757398849] [2021-12-16 09:02:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:02:34,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:02:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:02:34,066 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,182 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2021-12-16 09:02:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:02:34,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-16 09:02:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,201 INFO L225 Difference]: With dead ends: 66 [2021-12-16 09:02:34,201 INFO L226 Difference]: Without dead ends: 36 [2021-12-16 09:02:34,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:34,207 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-16 09:02:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-12-16 09:02:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-12-16 09:02:34,268 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 5 [2021-12-16 09:02:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,268 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-12-16 09:02:34,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-12-16 09:02:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 09:02:34,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:02:34,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash 889540457, now seen corresponding path program 1 times [2021-12-16 09:02:34,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637863858] [2021-12-16 09:02:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637863858] [2021-12-16 09:02:34,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637863858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:34,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542143294] [2021-12-16 09:02:34,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:02:34,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:02:34,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:02:34,343 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,392 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-12-16 09:02:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:02:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-16 09:02:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,394 INFO L225 Difference]: With dead ends: 28 [2021-12-16 09:02:34,395 INFO L226 Difference]: Without dead ends: 27 [2021-12-16 09:02:34,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:34,397 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-16 09:02:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-16 09:02:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-12-16 09:02:34,405 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 6 [2021-12-16 09:02:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:02:34,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-12-16 09:02:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 09:02:34,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:02:34,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903811, now seen corresponding path program 1 times [2021-12-16 09:02:34,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465018100] [2021-12-16 09:02:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465018100] [2021-12-16 09:02:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465018100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:02:34,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095179288] [2021-12-16 09:02:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:02:34,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:02:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:34,457 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,498 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-12-16 09:02:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:02:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 09:02:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,501 INFO L225 Difference]: With dead ends: 40 [2021-12-16 09:02:34,502 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 09:02:34,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:34,505 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 09:02:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-16 09:02:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-12-16 09:02:34,518 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 7 [2021-12-16 09:02:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,519 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-16 09:02:34,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-12-16 09:02:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 09:02:34,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:02:34,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903861, now seen corresponding path program 1 times [2021-12-16 09:02:34,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679580627] [2021-12-16 09:02:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679580627] [2021-12-16 09:02:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679580627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:34,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261709323] [2021-12-16 09:02:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:02:34,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:02:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:02:34,573 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,626 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-12-16 09:02:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:02:34,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 09:02:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,630 INFO L225 Difference]: With dead ends: 50 [2021-12-16 09:02:34,631 INFO L226 Difference]: Without dead ends: 49 [2021-12-16 09:02:34,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:34,639 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-16 09:02:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2021-12-16 09:02:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2021-12-16 09:02:34,654 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 7 [2021-12-16 09:02:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,654 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2021-12-16 09:02:34,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2021-12-16 09:02:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:02:34,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:02:34,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash 148443370, now seen corresponding path program 1 times [2021-12-16 09:02:34,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085342518] [2021-12-16 09:02:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085342518] [2021-12-16 09:02:34,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085342518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:02:34,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27872479] [2021-12-16 09:02:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:02:34,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:02:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:34,683 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,725 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-12-16 09:02:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:02:34,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:02:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,727 INFO L225 Difference]: With dead ends: 46 [2021-12-16 09:02:34,728 INFO L226 Difference]: Without dead ends: 43 [2021-12-16 09:02:34,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:34,733 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-16 09:02:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-12-16 09:02:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2021-12-16 09:02:34,744 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 8 [2021-12-16 09:02:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,744 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2021-12-16 09:02:34,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2021-12-16 09:02:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:02:34,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 09:02:34,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash 148444908, now seen corresponding path program 1 times [2021-12-16 09:02:34,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704725890] [2021-12-16 09:02:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704725890] [2021-12-16 09:02:34,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704725890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:34,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:34,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:34,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015838996] [2021-12-16 09:02:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:34,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:02:34,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:02:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:02:34,793 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:34,824 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2021-12-16 09:02:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:02:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:02:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:34,828 INFO L225 Difference]: With dead ends: 40 [2021-12-16 09:02:34,828 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 09:02:34,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:34,830 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:34,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 09:02:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-16 09:02:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.457142857142857) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-12-16 09:02:34,844 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 8 [2021-12-16 09:02:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:34,844 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-12-16 09:02:34,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-12-16 09:02:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:02:34,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:34,845 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:34,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 09:02:34,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash 351585609, now seen corresponding path program 1 times [2021-12-16 09:02:34,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:34,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235964719] [2021-12-16 09:02:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:34,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235964719] [2021-12-16 09:02:34,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235964719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:34,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166688384] [2021-12-16 09:02:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:34,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:34,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:34,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:34,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:02:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:34,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:34,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:34,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:35,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166688384] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:35,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:35,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-16 09:02:35,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378677233] [2021-12-16 09:02:35,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:35,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:02:35,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:02:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:35,062 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:35,203 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2021-12-16 09:02:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 09:02:35,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:02:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:35,205 INFO L225 Difference]: With dead ends: 113 [2021-12-16 09:02:35,206 INFO L226 Difference]: Without dead ends: 112 [2021-12-16 09:02:35,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:35,207 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 112 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:35,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-16 09:02:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2021-12-16 09:02:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.457142857142857) internal successors, (102), 73 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2021-12-16 09:02:35,220 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 9 [2021-12-16 09:02:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:35,221 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2021-12-16 09:02:35,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2021-12-16 09:02:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 09:02:35,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:35,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:35,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:35,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:35,444 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1985673441, now seen corresponding path program 1 times [2021-12-16 09:02:35,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114780687] [2021-12-16 09:02:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:35,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:35,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:35,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114780687] [2021-12-16 09:02:35,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114780687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:35,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:35,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:02:35,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864782544] [2021-12-16 09:02:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:35,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:02:35,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:02:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:35,484 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:35,535 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2021-12-16 09:02:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:02:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-16 09:02:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:35,538 INFO L225 Difference]: With dead ends: 80 [2021-12-16 09:02:35,540 INFO L226 Difference]: Without dead ends: 79 [2021-12-16 09:02:35,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:02:35,541 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:35,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-16 09:02:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-12-16 09:02:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 74 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2021-12-16 09:02:35,555 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 10 [2021-12-16 09:02:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:35,556 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2021-12-16 09:02:35,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2021-12-16 09:02:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 09:02:35,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:35,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:35,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 09:02:35,557 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)] === [2021-12-16 09:02:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993400, now seen corresponding path program 1 times [2021-12-16 09:02:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:35,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54203077] [2021-12-16 09:02:35,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:35,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:35,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54203077] [2021-12-16 09:02:35,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54203077] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:35,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212675875] [2021-12-16 09:02:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:35,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:35,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:35,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:02:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:35,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:35,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:35,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:35,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212675875] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:35,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-12-16 09:02:35,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231137216] [2021-12-16 09:02:35,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:35,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 09:02:35,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 09:02:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:02:35,777 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:35,949 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-12-16 09:02:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:02:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 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 [2021-12-16 09:02:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:35,962 INFO L225 Difference]: With dead ends: 120 [2021-12-16 09:02:35,962 INFO L226 Difference]: Without dead ends: 119 [2021-12-16 09:02:35,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:02:35,962 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:35,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 54 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-16 09:02:35,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2021-12-16 09:02:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 92 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2021-12-16 09:02:35,975 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 11 [2021-12-16 09:02:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:35,975 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2021-12-16 09:02:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2021-12-16 09:02:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 09:02:35,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:35,976 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:36,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:36,191 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,SelfDestructingSolverStorable8 [2021-12-16 09:02:36,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993350, now seen corresponding path program 1 times [2021-12-16 09:02:36,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5374772] [2021-12-16 09:02:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:36,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:36,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5374772] [2021-12-16 09:02:36,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5374772] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:36,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518431505] [2021-12-16 09:02:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:36,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:36,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:36,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:02:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:36,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518431505] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:36,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:36,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-16 09:02:36,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459842093] [2021-12-16 09:02:36,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:36,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:02:36,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:02:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:36,352 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:36,450 INFO L93 Difference]: Finished difference Result 254 states and 355 transitions. [2021-12-16 09:02:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 09:02:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 09:02:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:36,453 INFO L225 Difference]: With dead ends: 254 [2021-12-16 09:02:36,453 INFO L226 Difference]: Without dead ends: 253 [2021-12-16 09:02:36,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:36,454 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:36,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 87 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-16 09:02:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2021-12-16 09:02:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.4394618834080717) internal successors, (321), 226 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2021-12-16 09:02:36,476 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 11 [2021-12-16 09:02:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:36,476 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2021-12-16 09:02:36,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2021-12-16 09:02:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 09:02:36,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:36,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:36,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:36,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:36,692 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1426334450, now seen corresponding path program 1 times [2021-12-16 09:02:36,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826882425] [2021-12-16 09:02:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:36,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826882425] [2021-12-16 09:02:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826882425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:36,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:36,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:02:36,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144721115] [2021-12-16 09:02:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:02:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:02:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:36,724 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:36,781 INFO L93 Difference]: Finished difference Result 231 states and 325 transitions. [2021-12-16 09:02:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:02:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 09:02:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:36,783 INFO L225 Difference]: With dead ends: 231 [2021-12-16 09:02:36,783 INFO L226 Difference]: Without dead ends: 228 [2021-12-16 09:02:36,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:02:36,784 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:36,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-16 09:02:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-12-16 09:02:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.4330357142857142) internal successors, (321), 227 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2021-12-16 09:02:36,793 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 11 [2021-12-16 09:02:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2021-12-16 09:02:36,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2021-12-16 09:02:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 09:02:36,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:36,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:36,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 09:02:36,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 930844933, now seen corresponding path program 1 times [2021-12-16 09:02:36,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:36,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384657101] [2021-12-16 09:02:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:36,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384657101] [2021-12-16 09:02:36,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384657101] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748336786] [2021-12-16 09:02:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:36,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:36,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:36,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:02:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:36,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:36,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:36,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:36,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748336786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:36,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:36,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-12-16 09:02:36,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398553986] [2021-12-16 09:02:36,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:36,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:02:36,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:36,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:02:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:02:36,956 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:37,021 INFO L93 Difference]: Finished difference Result 256 states and 354 transitions. [2021-12-16 09:02:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:02:37,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-16 09:02:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:37,023 INFO L225 Difference]: With dead ends: 256 [2021-12-16 09:02:37,023 INFO L226 Difference]: Without dead ends: 253 [2021-12-16 09:02:37,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:37,024 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:37,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 33 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-16 09:02:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 242. [2021-12-16 09:02:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.415966386554622) internal successors, (337), 241 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 337 transitions. [2021-12-16 09:02:37,037 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 337 transitions. Word has length 12 [2021-12-16 09:02:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:37,037 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 337 transitions. [2021-12-16 09:02:37,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 337 transitions. [2021-12-16 09:02:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 09:02:37,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:37,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:37,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:37,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:37,251 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1922968006, now seen corresponding path program 1 times [2021-12-16 09:02:37,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180982474] [2021-12-16 09:02:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:37,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:37,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:37,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180982474] [2021-12-16 09:02:37,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180982474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:37,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378059239] [2021-12-16 09:02:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:37,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:37,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:37,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:02:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:37,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 09:02:37,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:37,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:37,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378059239] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:37,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:37,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-12-16 09:02:37,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861804167] [2021-12-16 09:02:37,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:37,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 09:02:37,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 09:02:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:02:37,523 INFO L87 Difference]: Start difference. First operand 242 states and 337 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:37,630 INFO L93 Difference]: Finished difference Result 253 states and 348 transitions. [2021-12-16 09:02:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 09:02:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-16 09:02:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:37,633 INFO L225 Difference]: With dead ends: 253 [2021-12-16 09:02:37,633 INFO L226 Difference]: Without dead ends: 250 [2021-12-16 09:02:37,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2021-12-16 09:02:37,634 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:37,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 55 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-12-16 09:02:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2021-12-16 09:02:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.4075630252100841) internal successors, (335), 241 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 335 transitions. [2021-12-16 09:02:37,645 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 335 transitions. Word has length 14 [2021-12-16 09:02:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:37,645 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 335 transitions. [2021-12-16 09:02:37,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 335 transitions. [2021-12-16 09:02:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 09:02:37,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:37,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:37,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:37,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 09:02:37,864 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)] === [2021-12-16 09:02:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1772254812, now seen corresponding path program 1 times [2021-12-16 09:02:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:37,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997668524] [2021-12-16 09:02:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:37,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:37,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997668524] [2021-12-16 09:02:37,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997668524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:37,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:37,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:37,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62103359] [2021-12-16 09:02:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:37,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:02:37,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:02:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:37,905 INFO L87 Difference]: Start difference. First operand 242 states and 335 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:37,946 INFO L93 Difference]: Finished difference Result 474 states and 658 transitions. [2021-12-16 09:02:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:02:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-16 09:02:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:37,949 INFO L225 Difference]: With dead ends: 474 [2021-12-16 09:02:37,950 INFO L226 Difference]: Without dead ends: 319 [2021-12-16 09:02:37,951 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 [2021-12-16 09:02:37,952 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:37,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-16 09:02:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 298. [2021-12-16 09:02:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 294 states have (on average 1.3639455782312926) internal successors, (401), 297 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 401 transitions. [2021-12-16 09:02:37,972 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 401 transitions. Word has length 14 [2021-12-16 09:02:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:37,973 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 401 transitions. [2021-12-16 09:02:37,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 401 transitions. [2021-12-16 09:02:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 09:02:37,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:37,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:37,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 09:02:37,974 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash 449875085, now seen corresponding path program 1 times [2021-12-16 09:02:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961753978] [2021-12-16 09:02:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:37,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:38,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:38,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961753978] [2021-12-16 09:02:38,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961753978] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:38,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035230185] [2021-12-16 09:02:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:38,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:38,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:38,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:38,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 09:02:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:38,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 09:02:38,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:38,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035230185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:38,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:38,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-12-16 09:02:38,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066299207] [2021-12-16 09:02:38,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:38,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 09:02:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 09:02:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:02:38,230 INFO L87 Difference]: Start difference. First operand 298 states and 401 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:38,484 INFO L93 Difference]: Finished difference Result 378 states and 503 transitions. [2021-12-16 09:02:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 09:02:38,484 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 09:02:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:38,486 INFO L225 Difference]: With dead ends: 378 [2021-12-16 09:02:38,486 INFO L226 Difference]: Without dead ends: 376 [2021-12-16 09:02:38,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:02:38,487 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 132 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:38,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 53 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-16 09:02:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 339. [2021-12-16 09:02:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 335 states have (on average 1.3671641791044775) internal successors, (458), 338 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 458 transitions. [2021-12-16 09:02:38,504 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 458 transitions. Word has length 15 [2021-12-16 09:02:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 458 transitions. [2021-12-16 09:02:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 458 transitions. [2021-12-16 09:02:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 09:02:38,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:38,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:38,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:38,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 09:02:38,719 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1061225824, now seen corresponding path program 1 times [2021-12-16 09:02:38,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494636192] [2021-12-16 09:02:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:38,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:38,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:38,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494636192] [2021-12-16 09:02:38,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494636192] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956672719] [2021-12-16 09:02:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:38,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:38,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:38,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:38,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 09:02:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 09:02:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:38,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:38,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956672719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:38,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:38,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-12-16 09:02:38,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578916410] [2021-12-16 09:02:38,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:38,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:02:38,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:02:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:02:38,925 INFO L87 Difference]: Start difference. First operand 339 states and 458 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:39,059 INFO L93 Difference]: Finished difference Result 565 states and 772 transitions. [2021-12-16 09:02:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 09:02:39,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 09:02:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:39,062 INFO L225 Difference]: With dead ends: 565 [2021-12-16 09:02:39,062 INFO L226 Difference]: Without dead ends: 562 [2021-12-16 09:02:39,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:02:39,063 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:39,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-16 09:02:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 558. [2021-12-16 09:02:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 554 states have (on average 1.3664259927797835) internal successors, (757), 557 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 757 transitions. [2021-12-16 09:02:39,090 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 757 transitions. Word has length 16 [2021-12-16 09:02:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:39,090 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 757 transitions. [2021-12-16 09:02:39,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 757 transitions. [2021-12-16 09:02:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 09:02:39,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:39,091 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:39,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:39,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:39,308 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -220195594, now seen corresponding path program 1 times [2021-12-16 09:02:39,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:39,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113303554] [2021-12-16 09:02:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:39,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:39,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:39,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113303554] [2021-12-16 09:02:39,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113303554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:39,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:39,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:02:39,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792190278] [2021-12-16 09:02:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:39,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:02:39,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:02:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:02:39,328 INFO L87 Difference]: Start difference. First operand 558 states and 757 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:39,356 INFO L93 Difference]: Finished difference Result 862 states and 1167 transitions. [2021-12-16 09:02:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:02:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-16 09:02:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:39,358 INFO L225 Difference]: With dead ends: 862 [2021-12-16 09:02:39,358 INFO L226 Difference]: Without dead ends: 416 [2021-12-16 09:02:39,361 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 [2021-12-16 09:02:39,362 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:39,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-16 09:02:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 298. [2021-12-16 09:02:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 295 states have (on average 1.305084745762712) internal successors, (385), 297 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 385 transitions. [2021-12-16 09:02:39,381 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 385 transitions. Word has length 18 [2021-12-16 09:02:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:39,381 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 385 transitions. [2021-12-16 09:02:39,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 385 transitions. [2021-12-16 09:02:39,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 09:02:39,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:39,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:39,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 09:02:39,383 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)] === [2021-12-16 09:02:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash 798325015, now seen corresponding path program 2 times [2021-12-16 09:02:39,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:39,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712687640] [2021-12-16 09:02:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:39,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:39,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712687640] [2021-12-16 09:02:39,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712687640] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606318954] [2021-12-16 09:02:39,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:39,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:39,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:39,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 09:02:39,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:39,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:39,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:39,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:39,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606318954] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:39,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:39,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2021-12-16 09:02:39,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436120975] [2021-12-16 09:02:39,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:39,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-16 09:02:39,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-16 09:02:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:02:39,825 INFO L87 Difference]: Start difference. First operand 298 states and 385 transitions. Second operand has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:40,201 INFO L93 Difference]: Finished difference Result 414 states and 526 transitions. [2021-12-16 09:02:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-16 09:02:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-16 09:02:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:40,203 INFO L225 Difference]: With dead ends: 414 [2021-12-16 09:02:40,203 INFO L226 Difference]: Without dead ends: 407 [2021-12-16 09:02:40,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=1600, Unknown=0, NotChecked=0, Total=2162 [2021-12-16 09:02:40,205 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 181 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:40,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 80 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-16 09:02:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 382. [2021-12-16 09:02:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 379 states have (on average 1.2717678100263852) internal successors, (482), 381 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 482 transitions. [2021-12-16 09:02:40,240 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 482 transitions. Word has length 23 [2021-12-16 09:02:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 482 transitions. [2021-12-16 09:02:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 482 transitions. [2021-12-16 09:02:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 09:02:40,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:40,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:40,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:40,451 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,SelfDestructingSolverStorable17 [2021-12-16 09:02:40,452 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash 197850519, now seen corresponding path program 3 times [2021-12-16 09:02:40,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417520083] [2021-12-16 09:02:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:40,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:40,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:40,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417520083] [2021-12-16 09:02:40,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417520083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:40,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058105560] [2021-12-16 09:02:40,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:40,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:40,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:40,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 09:02:40,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-16 09:02:40,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:40,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 09:02:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:02:40,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:02:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058105560] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:40,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:40,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2021-12-16 09:02:40,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068149045] [2021-12-16 09:02:40,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:40,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-16 09:02:40,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-16 09:02:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2021-12-16 09:02:40,903 INFO L87 Difference]: Start difference. First operand 382 states and 482 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:41,663 INFO L93 Difference]: Finished difference Result 566 states and 714 transitions. [2021-12-16 09:02:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-16 09:02:41,664 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 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 23 [2021-12-16 09:02:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:41,665 INFO L225 Difference]: With dead ends: 566 [2021-12-16 09:02:41,665 INFO L226 Difference]: Without dead ends: 422 [2021-12-16 09:02:41,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=2043, Unknown=0, NotChecked=0, Total=2652 [2021-12-16 09:02:41,667 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 289 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:41,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 83 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-16 09:02:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 374. [2021-12-16 09:02:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 371 states have (on average 1.2776280323450135) internal successors, (474), 373 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 474 transitions. [2021-12-16 09:02:41,687 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 474 transitions. Word has length 23 [2021-12-16 09:02:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:41,687 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 474 transitions. [2021-12-16 09:02:41,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 474 transitions. [2021-12-16 09:02:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 09:02:41,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:41,688 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:41,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:41,911 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -136202258, now seen corresponding path program 1 times [2021-12-16 09:02:41,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:41,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088957059] [2021-12-16 09:02:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:41,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:41,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088957059] [2021-12-16 09:02:41,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088957059] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043343536] [2021-12-16 09:02:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:41,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:41,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:41,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:02:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:42,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:42,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:42,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:42,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043343536] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:42,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:42,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2021-12-16 09:02:42,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109959198] [2021-12-16 09:02:42,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:42,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-16 09:02:42,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-16 09:02:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:02:42,320 INFO L87 Difference]: Start difference. First operand 374 states and 474 transitions. Second operand has 29 states, 28 states have (on average 2.5) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:42,807 INFO L93 Difference]: Finished difference Result 543 states and 677 transitions. [2021-12-16 09:02:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-16 09:02:42,807 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-16 09:02:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:42,809 INFO L225 Difference]: With dead ends: 543 [2021-12-16 09:02:42,809 INFO L226 Difference]: Without dead ends: 536 [2021-12-16 09:02:42,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=676, Invalid=2294, Unknown=0, NotChecked=0, Total=2970 [2021-12-16 09:02:42,811 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 252 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:42,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 71 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-12-16 09:02:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 441. [2021-12-16 09:02:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 438 states have (on average 1.2716894977168949) internal successors, (557), 440 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 557 transitions. [2021-12-16 09:02:42,835 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 557 transitions. Word has length 24 [2021-12-16 09:02:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:42,835 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 557 transitions. [2021-12-16 09:02:42,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 557 transitions. [2021-12-16 09:02:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 09:02:42,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:42,836 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:42,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:43,051 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 173293518, now seen corresponding path program 1 times [2021-12-16 09:02:43,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:43,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111038974] [2021-12-16 09:02:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:43,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:02:43,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:43,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111038974] [2021-12-16 09:02:43,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111038974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:43,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603662600] [2021-12-16 09:02:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:43,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:43,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:43,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:02:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:43,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:43,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:02:43,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:02:43,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603662600] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:43,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:43,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-16 09:02:43,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010448097] [2021-12-16 09:02:43,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:43,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 09:02:43,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:43,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 09:02:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:02:43,352 INFO L87 Difference]: Start difference. First operand 441 states and 557 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:43,542 INFO L93 Difference]: Finished difference Result 921 states and 1214 transitions. [2021-12-16 09:02:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 09:02:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-16 09:02:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:43,546 INFO L225 Difference]: With dead ends: 921 [2021-12-16 09:02:43,546 INFO L226 Difference]: Without dead ends: 920 [2021-12-16 09:02:43,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-12-16 09:02:43,547 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 228 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:43,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 168 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-16 09:02:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 887. [2021-12-16 09:02:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 884 states have (on average 1.2997737556561086) internal successors, (1149), 886 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1149 transitions. [2021-12-16 09:02:43,603 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1149 transitions. Word has length 27 [2021-12-16 09:02:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:43,603 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1149 transitions. [2021-12-16 09:02:43,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1149 transitions. [2021-12-16 09:02:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 09:02:43,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:43,605 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:43,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:43,819 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,SelfDestructingSolverStorable20 [2021-12-16 09:02:43,819 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -860327901, now seen corresponding path program 1 times [2021-12-16 09:02:43,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094380590] [2021-12-16 09:02:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:43,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:43,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094380590] [2021-12-16 09:02:43,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094380590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097205119] [2021-12-16 09:02:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:43,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:43,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:43,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 09:02:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:43,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:02:43,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:44,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:44,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097205119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:44,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:44,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2021-12-16 09:02:44,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577568076] [2021-12-16 09:02:44,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:44,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-16 09:02:44,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-16 09:02:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2021-12-16 09:02:44,467 INFO L87 Difference]: Start difference. First operand 887 states and 1149 transitions. Second operand has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:45,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:45,288 INFO L93 Difference]: Finished difference Result 1321 states and 1672 transitions. [2021-12-16 09:02:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-16 09:02:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 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 33 [2021-12-16 09:02:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:45,293 INFO L225 Difference]: With dead ends: 1321 [2021-12-16 09:02:45,293 INFO L226 Difference]: Without dead ends: 1312 [2021-12-16 09:02:45,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2081 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1447, Invalid=5033, Unknown=0, NotChecked=0, Total=6480 [2021-12-16 09:02:45,303 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 444 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:45,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 90 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-12-16 09:02:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1017. [2021-12-16 09:02:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1014 states have (on average 1.2879684418145956) internal successors, (1306), 1016 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1306 transitions. [2021-12-16 09:02:45,355 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1306 transitions. Word has length 33 [2021-12-16 09:02:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:45,356 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1306 transitions. [2021-12-16 09:02:45,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.425) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1306 transitions. [2021-12-16 09:02:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 09:02:45,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:45,357 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-16 09:02:45,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:45,571 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,SelfDestructingSolverStorable21 [2021-12-16 09:02:45,571 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1836582758, now seen corresponding path program 1 times [2021-12-16 09:02:45,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:45,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989910867] [2021-12-16 09:02:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:45,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:45,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:45,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989910867] [2021-12-16 09:02:45,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989910867] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:45,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585754528] [2021-12-16 09:02:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:45,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:45,658 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:45,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 09:02:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:45,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:45,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:45,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:45,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585754528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:45,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:45,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-16 09:02:45,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412322878] [2021-12-16 09:02:45,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:45,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 09:02:45,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 09:02:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:02:45,903 INFO L87 Difference]: Start difference. First operand 1017 states and 1306 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:46,199 INFO L93 Difference]: Finished difference Result 2739 states and 3532 transitions. [2021-12-16 09:02:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 09:02:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 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 33 [2021-12-16 09:02:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:46,208 INFO L225 Difference]: With dead ends: 2739 [2021-12-16 09:02:46,209 INFO L226 Difference]: Without dead ends: 2738 [2021-12-16 09:02:46,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-12-16 09:02:46,210 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 259 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:46,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 116 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-12-16 09:02:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1434. [2021-12-16 09:02:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1431 states have (on average 1.317959468902865) internal successors, (1886), 1433 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1886 transitions. [2021-12-16 09:02:46,301 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1886 transitions. Word has length 33 [2021-12-16 09:02:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:46,301 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1886 transitions. [2021-12-16 09:02:46,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1886 transitions. [2021-12-16 09:02:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 09:02:46,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:46,303 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:46,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:46,521 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,SelfDestructingSolverStorable22 [2021-12-16 09:02:46,522 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 374887770, now seen corresponding path program 2 times [2021-12-16 09:02:46,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666733561] [2021-12-16 09:02:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:46,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:46,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666733561] [2021-12-16 09:02:46,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666733561] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939984380] [2021-12-16 09:02:46,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:46,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:46,675 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 09:02:46,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:46,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 09:02:46,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:47,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:47,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939984380] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:47,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:47,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2021-12-16 09:02:47,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631147256] [2021-12-16 09:02:47,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:47,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-16 09:02:47,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-16 09:02:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=2146, Unknown=0, NotChecked=0, Total=2756 [2021-12-16 09:02:47,381 INFO L87 Difference]: Start difference. First operand 1434 states and 1886 transitions. Second operand has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:48,271 INFO L93 Difference]: Finished difference Result 1822 states and 2352 transitions. [2021-12-16 09:02:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-16 09:02:48,272 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 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 40 [2021-12-16 09:02:48,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:48,277 INFO L225 Difference]: With dead ends: 1822 [2021-12-16 09:02:48,278 INFO L226 Difference]: Without dead ends: 1811 [2021-12-16 09:02:48,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1918, Invalid=6824, Unknown=0, NotChecked=0, Total=8742 [2021-12-16 09:02:48,280 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 442 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:48,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 105 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-12-16 09:02:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1555. [2021-12-16 09:02:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1552 states have (on average 1.3195876288659794) internal successors, (2048), 1554 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2048 transitions. [2021-12-16 09:02:48,371 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2048 transitions. Word has length 40 [2021-12-16 09:02:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:48,371 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2048 transitions. [2021-12-16 09:02:48,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 53 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2048 transitions. [2021-12-16 09:02:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 09:02:48,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:48,372 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:48,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:48,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:48,599 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1296298160, now seen corresponding path program 4 times [2021-12-16 09:02:48,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406120665] [2021-12-16 09:02:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:48,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:48,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:48,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406120665] [2021-12-16 09:02:48,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406120665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:48,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589436595] [2021-12-16 09:02:48,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:02:48,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:48,792 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:48,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 09:02:48,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:02:48,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:48,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 09:02:48,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:49,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589436595] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:49,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:49,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2021-12-16 09:02:49,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531729758] [2021-12-16 09:02:49,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:49,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-16 09:02:49,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-16 09:02:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=2666, Unknown=0, NotChecked=0, Total=3422 [2021-12-16 09:02:49,575 INFO L87 Difference]: Start difference. First operand 1555 states and 2048 transitions. Second operand has 59 states, 58 states have (on average 2.189655172413793) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:50,405 INFO L93 Difference]: Finished difference Result 1891 states and 2437 transitions. [2021-12-16 09:02:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-16 09:02:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.189655172413793) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-16 09:02:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:50,411 INFO L225 Difference]: With dead ends: 1891 [2021-12-16 09:02:50,412 INFO L226 Difference]: Without dead ends: 1879 [2021-12-16 09:02:50,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2377, Invalid=6935, Unknown=0, NotChecked=0, Total=9312 [2021-12-16 09:02:50,416 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 508 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:50,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 110 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2021-12-16 09:02:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1861. [2021-12-16 09:02:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1858 states have (on average 1.2857911733046286) internal successors, (2389), 1860 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2389 transitions. [2021-12-16 09:02:50,530 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2389 transitions. Word has length 43 [2021-12-16 09:02:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:50,530 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2389 transitions. [2021-12-16 09:02:50,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.189655172413793) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2389 transitions. [2021-12-16 09:02:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 09:02:50,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:50,532 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:50,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:50,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:50,747 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:50,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash -318414734, now seen corresponding path program 2 times [2021-12-16 09:02:50,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663640107] [2021-12-16 09:02:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:50,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:50,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663640107] [2021-12-16 09:02:50,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663640107] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256727447] [2021-12-16 09:02:50,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:50,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:50,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:50,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 09:02:50,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:50,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 09:02:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:51,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256727447] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:51,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:51,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2021-12-16 09:02:51,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455741130] [2021-12-16 09:02:51,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-16 09:02:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-16 09:02:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2021-12-16 09:02:51,676 INFO L87 Difference]: Start difference. First operand 1861 states and 2389 transitions. Second operand has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:52,919 INFO L93 Difference]: Finished difference Result 2796 states and 3495 transitions. [2021-12-16 09:02:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-12-16 09:02:52,919 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 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 45 [2021-12-16 09:02:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:52,928 INFO L225 Difference]: With dead ends: 2796 [2021-12-16 09:02:52,928 INFO L226 Difference]: Without dead ends: 2780 [2021-12-16 09:02:52,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4819 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3109, Invalid=10933, Unknown=0, NotChecked=0, Total=14042 [2021-12-16 09:02:52,931 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 660 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:52,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 117 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-12-16 09:02:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1839. [2021-12-16 09:02:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1836 states have (on average 1.292483660130719) internal successors, (2373), 1838 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2373 transitions. [2021-12-16 09:02:53,045 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2373 transitions. Word has length 45 [2021-12-16 09:02:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:53,045 INFO L470 AbstractCegarLoop]: Abstraction has 1839 states and 2373 transitions. [2021-12-16 09:02:53,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2373 transitions. [2021-12-16 09:02:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 09:02:53,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:53,047 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:53,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:53,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 09:02:53,257 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1069550188, now seen corresponding path program 2 times [2021-12-16 09:02:53,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:53,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348827320] [2021-12-16 09:02:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:53,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:02:53,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348827320] [2021-12-16 09:02:53,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348827320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:53,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323499502] [2021-12-16 09:02:53,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:53,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:53,500 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:53,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-16 09:02:53,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 09:02:53,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:53,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:02:53,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-16 09:02:53,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-16 09:02:53,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323499502] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:53,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:53,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 25 [2021-12-16 09:02:53,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53586228] [2021-12-16 09:02:53,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:53,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 09:02:53,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 09:02:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-12-16 09:02:53,765 INFO L87 Difference]: Start difference. First operand 1839 states and 2373 transitions. Second operand has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:54,145 INFO L93 Difference]: Finished difference Result 2016 states and 2591 transitions. [2021-12-16 09:02:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 09:02:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 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 51 [2021-12-16 09:02:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:54,151 INFO L225 Difference]: With dead ends: 2016 [2021-12-16 09:02:54,152 INFO L226 Difference]: Without dead ends: 2015 [2021-12-16 09:02:54,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 09:02:54,153 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 417 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:54,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 195 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-12-16 09:02:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 663. [2021-12-16 09:02:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 661 states have (on average 1.2632375189107412) internal successors, (835), 662 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 835 transitions. [2021-12-16 09:02:54,226 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 835 transitions. Word has length 51 [2021-12-16 09:02:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:54,226 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 835 transitions. [2021-12-16 09:02:54,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 835 transitions. [2021-12-16 09:02:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 09:02:54,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:54,233 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-12-16 09:02:54,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:54,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-16 09:02:54,434 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash -794874292, now seen corresponding path program 3 times [2021-12-16 09:02:54,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:54,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808080986] [2021-12-16 09:02:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:54,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:54,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808080986] [2021-12-16 09:02:54,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808080986] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417472069] [2021-12-16 09:02:54,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:54,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:54,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:54,656 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:54,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-16 09:02:54,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 09:02:54,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:54,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 09:02:54,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-16 09:02:54,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-16 09:02:55,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417472069] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:55,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:55,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 7] total 35 [2021-12-16 09:02:55,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979886437] [2021-12-16 09:02:55,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:55,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-16 09:02:55,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-16 09:02:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 09:02:55,149 INFO L87 Difference]: Start difference. First operand 663 states and 835 transitions. Second operand has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:56,607 INFO L93 Difference]: Finished difference Result 1123 states and 1349 transitions. [2021-12-16 09:02:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-16 09:02:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 0 states have call successors, (0), 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 52 [2021-12-16 09:02:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:56,610 INFO L225 Difference]: With dead ends: 1123 [2021-12-16 09:02:56,610 INFO L226 Difference]: Without dead ends: 552 [2021-12-16 09:02:56,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2010 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1631, Invalid=6559, Unknown=0, NotChecked=0, Total=8190 [2021-12-16 09:02:56,612 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 445 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:56,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 97 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-12-16 09:02:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 339. [2021-12-16 09:02:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 337 states have (on average 1.175074183976261) internal successors, (396), 338 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 396 transitions. [2021-12-16 09:02:56,664 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 396 transitions. Word has length 52 [2021-12-16 09:02:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:56,665 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 396 transitions. [2021-12-16 09:02:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 396 transitions. [2021-12-16 09:02:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 09:02:56,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:56,667 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-16 09:02:56,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:56,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-16 09:02:56,883 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2047447808, now seen corresponding path program 1 times [2021-12-16 09:02:56,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978368950] [2021-12-16 09:02:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:56,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:57,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:57,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978368950] [2021-12-16 09:02:57,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978368950] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:57,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123055403] [2021-12-16 09:02:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:57,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:57,136 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:57,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-16 09:02:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:57,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 09:02:57,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:57,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:02:58,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123055403] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:58,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:02:58,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-12-16 09:02:58,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12403341] [2021-12-16 09:02:58,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:58,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-16 09:02:58,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-16 09:02:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=984, Invalid=3986, Unknown=0, NotChecked=0, Total=4970 [2021-12-16 09:02:58,181 INFO L87 Difference]: Start difference. First operand 339 states and 396 transitions. Second operand has 71 states, 70 states have (on average 2.414285714285714) internal successors, (169), 71 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:59,539 INFO L93 Difference]: Finished difference Result 874 states and 1018 transitions. [2021-12-16 09:02:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-16 09:02:59,540 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.414285714285714) internal successors, (169), 71 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-16 09:02:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:59,542 INFO L225 Difference]: With dead ends: 874 [2021-12-16 09:02:59,543 INFO L226 Difference]: Without dead ends: 858 [2021-12-16 09:02:59,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5484 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3118, Invalid=12134, Unknown=0, NotChecked=0, Total=15252 [2021-12-16 09:02:59,549 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 622 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:59,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 102 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-12-16 09:02:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 438. [2021-12-16 09:02:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.2041284403669725) internal successors, (525), 437 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 525 transitions. [2021-12-16 09:02:59,606 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 525 transitions. Word has length 57 [2021-12-16 09:02:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:59,606 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 525 transitions. [2021-12-16 09:02:59,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.414285714285714) internal successors, (169), 71 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:02:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 525 transitions. [2021-12-16 09:02:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-16 09:02:59,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:59,608 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-16 09:02:59,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:59,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 09:02:59,819 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:02:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2012170120, now seen corresponding path program 3 times [2021-12-16 09:02:59,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306002450] [2021-12-16 09:02:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:59,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:00,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306002450] [2021-12-16 09:03:00,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306002450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613764346] [2021-12-16 09:03:00,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:03:00,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:00,084 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:00,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-16 09:03:00,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-16 09:03:00,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:00,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-16 09:03:00,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:00,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:01,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613764346] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:01,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:01,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 82 [2021-12-16 09:03:01,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088070797] [2021-12-16 09:03:01,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:01,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-16 09:03:01,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-16 09:03:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1276, Invalid=5530, Unknown=0, NotChecked=0, Total=6806 [2021-12-16 09:03:01,413 INFO L87 Difference]: Start difference. First operand 438 states and 525 transitions. Second operand has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:03,108 INFO L93 Difference]: Finished difference Result 1173 states and 1342 transitions. [2021-12-16 09:03:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-12-16 09:03:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 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 63 [2021-12-16 09:03:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:03,112 INFO L225 Difference]: With dead ends: 1173 [2021-12-16 09:03:03,112 INFO L226 Difference]: Without dead ends: 1161 [2021-12-16 09:03:03,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7700 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4644, Invalid=16526, Unknown=0, NotChecked=0, Total=21170 [2021-12-16 09:03:03,114 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 745 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:03,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 155 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:03:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-12-16 09:03:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 547. [2021-12-16 09:03:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 545 states have (on average 1.2165137614678898) internal successors, (663), 546 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 663 transitions. [2021-12-16 09:03:03,222 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 663 transitions. Word has length 63 [2021-12-16 09:03:03,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:03,222 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 663 transitions. [2021-12-16 09:03:03,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 663 transitions. [2021-12-16 09:03:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 09:03:03,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:03,223 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2021-12-16 09:03:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:03,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:03,449 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:03,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1937639662, now seen corresponding path program 2 times [2021-12-16 09:03:03,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:03,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414888057] [2021-12-16 09:03:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:03,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:03,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414888057] [2021-12-16 09:03:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414888057] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:03,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406370598] [2021-12-16 09:03:03,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:03:03,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:03,660 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:03,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-16 09:03:03,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 09:03:03,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:03,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:03:03,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-16 09:03:03,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-16 09:03:03,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406370598] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:03,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:03,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 25 [2021-12-16 09:03:03,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101567632] [2021-12-16 09:03:03,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:03,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 09:03:03,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 09:03:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-12-16 09:03:03,951 INFO L87 Difference]: Start difference. First operand 547 states and 663 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:04,508 INFO L93 Difference]: Finished difference Result 1162 states and 1339 transitions. [2021-12-16 09:03:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 09:03:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 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 69 [2021-12-16 09:03:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:04,511 INFO L225 Difference]: With dead ends: 1162 [2021-12-16 09:03:04,511 INFO L226 Difference]: Without dead ends: 1161 [2021-12-16 09:03:04,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 09:03:04,512 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 307 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:04,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 112 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:03:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-12-16 09:03:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 445. [2021-12-16 09:03:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1824324324324325) internal successors, (525), 444 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 525 transitions. [2021-12-16 09:03:04,614 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 525 transitions. Word has length 69 [2021-12-16 09:03:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:04,614 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 525 transitions. [2021-12-16 09:03:04,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 525 transitions. [2021-12-16 09:03:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 09:03:04,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:04,615 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-16 09:03:04,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-16 09:03:04,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:04,819 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 256110300, now seen corresponding path program 4 times [2021-12-16 09:03:04,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:04,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403536657] [2021-12-16 09:03:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:04,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:05,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403536657] [2021-12-16 09:03:05,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403536657] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:05,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757584431] [2021-12-16 09:03:05,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:03:05,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:05,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:05,260 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:05,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-16 09:03:05,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:03:05,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:05,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-16 09:03:05,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:06,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:07,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757584431] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:07,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:07,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 106 [2021-12-16 09:03:07,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269744351] [2021-12-16 09:03:07,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:07,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-12-16 09:03:07,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-12-16 09:03:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2100, Invalid=9242, Unknown=0, NotChecked=0, Total=11342 [2021-12-16 09:03:07,080 INFO L87 Difference]: Start difference. First operand 445 states and 525 transitions. Second operand has 107 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:09,527 INFO L93 Difference]: Finished difference Result 1620 states and 1833 transitions. [2021-12-16 09:03:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-12-16 09:03:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 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 79 [2021-12-16 09:03:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:09,531 INFO L225 Difference]: With dead ends: 1620 [2021-12-16 09:03:09,531 INFO L226 Difference]: Without dead ends: 1599 [2021-12-16 09:03:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13078 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7731, Invalid=27425, Unknown=0, NotChecked=0, Total=35156 [2021-12-16 09:03:09,533 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1092 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:09,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 166 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:03:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-12-16 09:03:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 501. [2021-12-16 09:03:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.172) internal successors, (586), 500 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 586 transitions. [2021-12-16 09:03:09,676 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 586 transitions. Word has length 79 [2021-12-16 09:03:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:09,677 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 586 transitions. [2021-12-16 09:03:09,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 586 transitions. [2021-12-16 09:03:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 09:03:09,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:09,678 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 6, 6, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1] [2021-12-16 09:03:09,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-16 09:03:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:09,890 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2043718117, now seen corresponding path program 5 times [2021-12-16 09:03:09,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788068283] [2021-12-16 09:03:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:09,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:10,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788068283] [2021-12-16 09:03:10,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788068283] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82427397] [2021-12-16 09:03:10,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:03:10,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:10,420 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:10,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-16 09:03:10,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-16 09:03:10,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:10,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-16 09:03:10,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 236 proven. 36 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-16 09:03:10,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 236 proven. 36 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-16 09:03:10,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82427397] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:10,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:10,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 6, 6] total 43 [2021-12-16 09:03:10,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615669831] [2021-12-16 09:03:10,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:10,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-16 09:03:10,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-16 09:03:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1471, Unknown=0, NotChecked=0, Total=1806 [2021-12-16 09:03:10,801 INFO L87 Difference]: Start difference. First operand 501 states and 586 transitions. Second operand has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:12,141 INFO L93 Difference]: Finished difference Result 927 states and 1060 transitions. [2021-12-16 09:03:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-16 09:03:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 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 87 [2021-12-16 09:03:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:12,143 INFO L225 Difference]: With dead ends: 927 [2021-12-16 09:03:12,143 INFO L226 Difference]: Without dead ends: 457 [2021-12-16 09:03:12,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1723, Invalid=8177, Unknown=0, NotChecked=0, Total=9900 [2021-12-16 09:03:12,145 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 323 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:12,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 96 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:03:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-16 09:03:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 383. [2021-12-16 09:03:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.049738219895288) internal successors, (401), 382 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 401 transitions. [2021-12-16 09:03:12,253 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 401 transitions. Word has length 87 [2021-12-16 09:03:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:12,253 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 401 transitions. [2021-12-16 09:03:12,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.883720930232558) internal successors, (124), 43 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 401 transitions. [2021-12-16 09:03:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-16 09:03:12,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:12,254 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2021-12-16 09:03:12,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:12,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:12,454 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 415453268, now seen corresponding path program 4 times [2021-12-16 09:03:12,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:12,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353167125] [2021-12-16 09:03:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:12,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:12,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353167125] [2021-12-16 09:03:12,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353167125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780859681] [2021-12-16 09:03:12,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:03:12,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:12,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:12,988 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:12,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-16 09:03:13,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:03:13,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-16 09:03:13,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:14,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:15,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780859681] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:15,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:15,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 124 [2021-12-16 09:03:15,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908854391] [2021-12-16 09:03:15,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:15,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-12-16 09:03:15,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-12-16 09:03:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2898, Invalid=12602, Unknown=0, NotChecked=0, Total=15500 [2021-12-16 09:03:15,389 INFO L87 Difference]: Start difference. First operand 383 states and 401 transitions. Second operand has 125 states, 124 states have (on average 2.3548387096774195) internal successors, (292), 125 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:18,350 INFO L93 Difference]: Finished difference Result 875 states and 929 transitions. [2021-12-16 09:03:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-12-16 09:03:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.3548387096774195) internal successors, (292), 125 states have internal predecessors, (292), 0 states have call successors, (0), 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 98 [2021-12-16 09:03:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:18,353 INFO L225 Difference]: With dead ends: 875 [2021-12-16 09:03:18,353 INFO L226 Difference]: Without dead ends: 855 [2021-12-16 09:03:18,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18759 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9856, Invalid=39206, Unknown=0, NotChecked=0, Total=49062 [2021-12-16 09:03:18,355 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 914 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:18,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 178 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:03:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-12-16 09:03:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 478. [2021-12-16 09:03:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.0649895178197064) internal successors, (508), 477 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 508 transitions. [2021-12-16 09:03:18,458 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 508 transitions. Word has length 98 [2021-12-16 09:03:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:18,458 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 508 transitions. [2021-12-16 09:03:18,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 2.3548387096774195) internal successors, (292), 125 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 508 transitions. [2021-12-16 09:03:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-16 09:03:18,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:18,460 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2021-12-16 09:03:18,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:18,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:18,660 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 242179511, now seen corresponding path program 6 times [2021-12-16 09:03:18,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:18,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347352] [2021-12-16 09:03:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:18,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:19,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347352] [2021-12-16 09:03:19,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347352] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007410980] [2021-12-16 09:03:19,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 09:03:19,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:19,298 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:19,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-16 09:03:19,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-16 09:03:19,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:19,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-16 09:03:19,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:20,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:21,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007410980] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:21,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:21,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 136 [2021-12-16 09:03:21,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557257820] [2021-12-16 09:03:21,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:21,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2021-12-16 09:03:21,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2021-12-16 09:03:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3438, Invalid=15194, Unknown=0, NotChecked=0, Total=18632 [2021-12-16 09:03:22,000 INFO L87 Difference]: Start difference. First operand 478 states and 508 transitions. Second operand has 137 states, 136 states have (on average 2.213235294117647) internal successors, (301), 137 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:25,157 INFO L93 Difference]: Finished difference Result 1041 states and 1095 transitions. [2021-12-16 09:03:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-12-16 09:03:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 2.213235294117647) internal successors, (301), 137 states have internal predecessors, (301), 0 states have call successors, (0), 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 101 [2021-12-16 09:03:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:25,160 INFO L225 Difference]: With dead ends: 1041 [2021-12-16 09:03:25,160 INFO L226 Difference]: Without dead ends: 1024 [2021-12-16 09:03:25,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21180 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12477, Invalid=42983, Unknown=0, NotChecked=0, Total=55460 [2021-12-16 09:03:25,163 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1353 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:25,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 182 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 09:03:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-12-16 09:03:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 566. [2021-12-16 09:03:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.0548672566371682) internal successors, (596), 565 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 596 transitions. [2021-12-16 09:03:25,331 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 596 transitions. Word has length 101 [2021-12-16 09:03:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 596 transitions. [2021-12-16 09:03:25,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 2.213235294117647) internal successors, (301), 137 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:03:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 596 transitions. [2021-12-16 09:03:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-16 09:03:25,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:25,333 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 15, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-12-16 09:03:25,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:25,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-16 09:03:25,547 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:03:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1590210071, now seen corresponding path program 7 times [2021-12-16 09:03:25,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451472249] [2021-12-16 09:03:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:25,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:26,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451472249] [2021-12-16 09:03:26,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451472249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:03:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119339839] [2021-12-16 09:03:26,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-16 09:03:26,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:26,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:26,628 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:26,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-16 09:03:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:26,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-16 09:03:26,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:28,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:03:30,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119339839] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:30,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:03:30,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 172 [2021-12-16 09:03:30,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702767759] [2021-12-16 09:03:30,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:30,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2021-12-16 09:03:30,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2021-12-16 09:03:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5418, Invalid=24338, Unknown=0, NotChecked=0, Total=29756 [2021-12-16 09:03:30,706 INFO L87 Difference]: Start difference. First operand 566 states and 596 transitions. Second operand has 173 states, 172 states have (on average 2.203488372093023) internal successors, (379), 173 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)