./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive/Primes.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:07:10,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:07:10,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:07:10,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:07:10,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:07:10,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:07:10,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:07:10,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:07:10,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:07:10,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:07:10,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:07:10,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:07:10,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:07:10,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:07:10,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:07:10,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:07:10,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:07:10,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:07:10,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:07:10,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:07:10,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:07:10,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:07:10,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:07:10,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:07:10,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:07:10,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:07:10,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:07:10,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:07:10,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:07:10,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:07:10,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:07:10,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:07:10,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:07:10,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:07:10,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:07:10,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:07:10,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:07:10,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:07:10,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:07:10,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:07:10,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:07:10,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:07:10,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:07:10,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:07:10,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:07:10,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:07:10,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:07:10,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:07:10,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:07:10,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:07:10,381 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:07:10,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:07:10,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:07:10,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:07:10,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:07:10,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:07:10,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:07:10,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:07:10,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:07:10,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:07:10,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:07:10,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:07:10,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:07:10,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:07:10,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2021-12-19 15:07:10,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:07:10,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:07:10,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:07:10,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:07:10,597 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:07:10,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2021-12-19 15:07:10,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce55c657/2143da068f6e4e588eda1ae223905d29/FLAG2147be5f9 [2021-12-19 15:07:11,004 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:07:11,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2021-12-19 15:07:11,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce55c657/2143da068f6e4e588eda1ae223905d29/FLAG2147be5f9 [2021-12-19 15:07:11,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce55c657/2143da068f6e4e588eda1ae223905d29 [2021-12-19 15:07:11,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:07:11,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:07:11,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:07:11,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:07:11,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:07:11,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547174f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11, skipping insertion in model container [2021-12-19 15:07:11,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:07:11,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:07:11,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-12-19 15:07:11,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:07:11,172 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:07:11,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-12-19 15:07:11,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:07:11,200 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:07:11,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11 WrapperNode [2021-12-19 15:07:11,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:07:11,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:07:11,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:07:11,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:07:11,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,230 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2021-12-19 15:07:11,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:07:11,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:07:11,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:07:11,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:07:11,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:07:11,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:07:11,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:07:11,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:07:11,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (1/1) ... [2021-12-19 15:07:11,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:07:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:11,309 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) [2021-12-19 15:07:11,319 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 [2021-12-19 15:07:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2021-12-19 15:07:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2021-12-19 15:07:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:07:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-12-19 15:07:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-12-19 15:07:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2021-12-19 15:07:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2021-12-19 15:07:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:07:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:07:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:07:11,389 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:07:11,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:07:11,585 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:07:11,592 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:07:11,592 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-19 15:07:11,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:07:11 BoogieIcfgContainer [2021-12-19 15:07:11,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:07:11,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:07:11,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:07:11,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:07:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:07:11" (1/3) ... [2021-12-19 15:07:11,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1323fe09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:07:11, skipping insertion in model container [2021-12-19 15:07:11,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:07:11" (2/3) ... [2021-12-19 15:07:11,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1323fe09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:07:11, skipping insertion in model container [2021-12-19 15:07:11,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:07:11" (3/3) ... [2021-12-19 15:07:11,600 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2021-12-19 15:07:11,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:07:11,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-12-19 15:07:11,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:07:11,640 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 [2021-12-19 15:07:11,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-12-19 15:07:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-19 15:07:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-19 15:07:11,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:11,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-19 15:07:11,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2021-12-19 15:07:11,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:11,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834014500] [2021-12-19 15:07:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:11,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:11,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:11,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834014500] [2021-12-19 15:07:11,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834014500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:11,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:11,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:07:11,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918555543] [2021-12-19 15:07:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:11,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:07:11,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:07:11,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:07:11,821 INFO L87 Difference]: Start difference. First operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:11,860 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-12-19 15:07:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:07:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-19 15:07:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:11,868 INFO L225 Difference]: With dead ends: 89 [2021-12-19 15:07:11,868 INFO L226 Difference]: Without dead ends: 76 [2021-12-19 15:07:11,872 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 [2021-12-19 15:07:11,876 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 16 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:11,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-19 15:07:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-19 15:07:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 64 states have internal predecessors, (76), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-19 15:07:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-12-19 15:07:11,913 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2021-12-19 15:07:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:11,914 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-12-19 15:07:11,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-12-19 15:07:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 15:07:11,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:11,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 15:07:11,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:07:11,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2021-12-19 15:07:11,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981283139] [2021-12-19 15:07:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:11,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:11,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:11,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981283139] [2021-12-19 15:07:11,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981283139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:11,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:11,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:07:11,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599112768] [2021-12-19 15:07:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:11,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:07:11,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:11,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:07:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:07:11,961 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:11,975 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-12-19 15:07:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:07:11,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-19 15:07:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:11,977 INFO L225 Difference]: With dead ends: 76 [2021-12-19 15:07:11,977 INFO L226 Difference]: Without dead ends: 75 [2021-12-19 15:07:11,978 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 [2021-12-19 15:07:11,979 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:11,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 173 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-19 15:07:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-12-19 15:07:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-19 15:07:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2021-12-19 15:07:11,988 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2021-12-19 15:07:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:11,989 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-12-19 15:07:11,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2021-12-19 15:07:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-19 15:07:11,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:11,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:11,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:07:11,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1790314255, now seen corresponding path program 1 times [2021-12-19 15:07:11,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:11,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293652799] [2021-12-19 15:07:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:11,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293652799] [2021-12-19 15:07:12,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293652799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:07:12,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690565606] [2021-12-19 15:07:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:07:12,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:07:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:07:12,053 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,116 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-12-19 15:07:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:07:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-19 15:07:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,120 INFO L225 Difference]: With dead ends: 139 [2021-12-19 15:07:12,120 INFO L226 Difference]: Without dead ends: 70 [2021-12-19 15:07:12,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:07:12,125 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 249 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-19 15:07:12,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-12-19 15:07:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-19 15:07:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-12-19 15:07:12,139 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 15 [2021-12-19 15:07:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,139 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-12-19 15:07:12,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-12-19 15:07:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-19 15:07:12,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 15:07:12,141 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash -334825923, now seen corresponding path program 1 times [2021-12-19 15:07:12,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416583348] [2021-12-19 15:07:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416583348] [2021-12-19 15:07:12,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416583348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-19 15:07:12,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742805734] [2021-12-19 15:07:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-19 15:07:12,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-19 15:07:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:07:12,201 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,295 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2021-12-19 15:07:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:07:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-19 15:07:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,298 INFO L225 Difference]: With dead ends: 87 [2021-12-19 15:07:12,298 INFO L226 Difference]: Without dead ends: 86 [2021-12-19 15:07:12,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-19 15:07:12,306 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 78 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 309 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-19 15:07:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2021-12-19 15:07:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 69 states have internal predecessors, (84), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-19 15:07:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-12-19 15:07:12,320 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 16 [2021-12-19 15:07:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,320 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-12-19 15:07:12,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2021-12-19 15:07:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-19 15:07:12,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 15:07:12,322 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1789668974, now seen corresponding path program 1 times [2021-12-19 15:07:12,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202378303] [2021-12-19 15:07:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202378303] [2021-12-19 15:07:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202378303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:07:12,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198584943] [2021-12-19 15:07:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:07:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:07:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:07:12,353 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,371 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2021-12-19 15:07:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:07:12,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-19 15:07:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,372 INFO L225 Difference]: With dead ends: 87 [2021-12-19 15:07:12,372 INFO L226 Difference]: Without dead ends: 86 [2021-12-19 15:07:12,373 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 [2021-12-19 15:07:12,375 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 151 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 [2021-12-19 15:07:12,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 151 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-19 15:07:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-12-19 15:07:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 68 states have internal predecessors, (82), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-19 15:07:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2021-12-19 15:07:12,386 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 17 [2021-12-19 15:07:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,386 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2021-12-19 15:07:12,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2021-12-19 15:07:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-19 15:07:12,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 15:07:12,387 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash 355054241, now seen corresponding path program 1 times [2021-12-19 15:07:12,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185486939] [2021-12-19 15:07:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185486939] [2021-12-19 15:07:12,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185486939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:07:12,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842033838] [2021-12-19 15:07:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:07:12,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:07:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:07:12,426 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,518 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2021-12-19 15:07:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:07:12,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-19 15:07:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,520 INFO L225 Difference]: With dead ends: 114 [2021-12-19 15:07:12,520 INFO L226 Difference]: Without dead ends: 113 [2021-12-19 15:07:12,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:07:12,521 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 54 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 295 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-19 15:07:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-12-19 15:07:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 91 states have internal predecessors, (114), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:07:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 141 transitions. [2021-12-19 15:07:12,528 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 141 transitions. Word has length 18 [2021-12-19 15:07:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,528 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-12-19 15:07:12,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 141 transitions. [2021-12-19 15:07:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-19 15:07:12,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-19 15:07:12,529 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1880405543, now seen corresponding path program 1 times [2021-12-19 15:07:12,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366498769] [2021-12-19 15:07:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366498769] [2021-12-19 15:07:12,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366498769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-19 15:07:12,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415500689] [2021-12-19 15:07:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-19 15:07:12,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-19 15:07:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:07:12,604 INFO L87 Difference]: Start difference. First operand 111 states and 141 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:12,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,646 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2021-12-19 15:07:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:07:12,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-19 15:07:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,647 INFO L225 Difference]: With dead ends: 143 [2021-12-19 15:07:12,647 INFO L226 Difference]: Without dead ends: 113 [2021-12-19 15:07:12,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-19 15:07:12,648 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 4 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 459 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-19 15:07:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-12-19 15:07:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.382716049382716) internal successors, (112), 91 states have internal predecessors, (112), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:07:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2021-12-19 15:07:12,655 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 19 [2021-12-19 15:07:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,655 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2021-12-19 15:07:12,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2021-12-19 15:07:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-19 15:07:12,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-19 15:07:12,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1878220355, now seen corresponding path program 1 times [2021-12-19 15:07:12,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403113399] [2021-12-19 15:07:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403113399] [2021-12-19 15:07:12,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403113399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:07:12,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091915108] [2021-12-19 15:07:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:07:12,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:07:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:07:12,692 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,773 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2021-12-19 15:07:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:07:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-19 15:07:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,774 INFO L225 Difference]: With dead ends: 113 [2021-12-19 15:07:12,775 INFO L226 Difference]: Without dead ends: 112 [2021-12-19 15:07:12,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:07:12,779 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 52 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 267 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-19 15:07:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2021-12-19 15:07:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 91 states have internal predecessors, (110), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-19 15:07:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-12-19 15:07:12,785 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 19 [2021-12-19 15:07:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,785 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-12-19 15:07:12,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-12-19 15:07:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 15:07:12,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-19 15:07:12,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1361525461, now seen corresponding path program 1 times [2021-12-19 15:07:12,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270871795] [2021-12-19 15:07:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:12,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270871795] [2021-12-19 15:07:12,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270871795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:07:12,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507698138] [2021-12-19 15:07:12,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:07:12,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:07:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:07:12,817 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,850 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2021-12-19 15:07:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:07:12,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-19 15:07:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,852 INFO L225 Difference]: With dead ends: 150 [2021-12-19 15:07:12,852 INFO L226 Difference]: Without dead ends: 126 [2021-12-19 15:07:12,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:07:12,853 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 28 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 296 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-19 15:07:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2021-12-19 15:07:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 99 states have internal predecessors, (121), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-19 15:07:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2021-12-19 15:07:12,859 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 20 [2021-12-19 15:07:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,859 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2021-12-19 15:07:12,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2021-12-19 15:07:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-19 15:07:12,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-19 15:07:12,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1846567686, now seen corresponding path program 1 times [2021-12-19 15:07:12,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602071110] [2021-12-19 15:07:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:12,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:12,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602071110] [2021-12-19 15:07:12,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602071110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:12,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:12,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-19 15:07:12,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951394308] [2021-12-19 15:07:12,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:12,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-19 15:07:12,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-19 15:07:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:07:12,901 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:12,967 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-12-19 15:07:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:07:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-19 15:07:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:12,968 INFO L225 Difference]: With dead ends: 214 [2021-12-19 15:07:12,969 INFO L226 Difference]: Without dead ends: 114 [2021-12-19 15:07:12,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-19 15:07:12,969 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 52 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:12,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 350 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:12,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-19 15:07:12,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2021-12-19 15:07:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 93 states have internal predecessors, (111), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-19 15:07:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2021-12-19 15:07:12,974 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 22 [2021-12-19 15:07:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:12,974 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2021-12-19 15:07:12,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2021-12-19 15:07:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-19 15:07:12,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:12,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:12,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-19 15:07:12,976 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1538837383, now seen corresponding path program 1 times [2021-12-19 15:07:12,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114747098] [2021-12-19 15:07:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:12,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:13,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:13,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114747098] [2021-12-19 15:07:13,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114747098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:13,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:13,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:07:13,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496247393] [2021-12-19 15:07:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:13,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:07:13,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:07:13,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:07:13,013 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:13,066 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2021-12-19 15:07:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:07:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-19 15:07:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:13,068 INFO L225 Difference]: With dead ends: 136 [2021-12-19 15:07:13,068 INFO L226 Difference]: Without dead ends: 134 [2021-12-19 15:07:13,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:07:13,069 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:13,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 265 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-19 15:07:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2021-12-19 15:07:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 105 states have internal predecessors, (129), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-19 15:07:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2021-12-19 15:07:13,074 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 158 transitions. Word has length 22 [2021-12-19 15:07:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:13,075 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 158 transitions. [2021-12-19 15:07:13,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 158 transitions. [2021-12-19 15:07:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-19 15:07:13,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:13,076 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:13,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-19 15:07:13,076 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1613355843, now seen corresponding path program 1 times [2021-12-19 15:07:13,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:13,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577293431] [2021-12-19 15:07:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:13,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:13,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577293431] [2021-12-19 15:07:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577293431] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448268648] [2021-12-19 15:07:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:13,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:13,131 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) [2021-12-19 15:07:13,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:07:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-19 15:07:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:13,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:13,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448268648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:13,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:13,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-19 15:07:13,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224777334] [2021-12-19 15:07:13,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:13,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-19 15:07:13,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-19 15:07:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:07:13,361 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:13,475 INFO L93 Difference]: Finished difference Result 250 states and 312 transitions. [2021-12-19 15:07:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 15:07:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-19 15:07:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:13,481 INFO L225 Difference]: With dead ends: 250 [2021-12-19 15:07:13,481 INFO L226 Difference]: Without dead ends: 142 [2021-12-19 15:07:13,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:07:13,482 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 118 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:13,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 470 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-19 15:07:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2021-12-19 15:07:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 106 states have (on average 1.320754716981132) internal successors, (140), 114 states have internal predecessors, (140), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 15:07:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 171 transitions. [2021-12-19 15:07:13,487 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 171 transitions. Word has length 24 [2021-12-19 15:07:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:13,487 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 171 transitions. [2021-12-19 15:07:13,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 171 transitions. [2021-12-19 15:07:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-19 15:07:13,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:13,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:13,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:13,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 15:07:13,699 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 48447777, now seen corresponding path program 1 times [2021-12-19 15:07:13,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375143796] [2021-12-19 15:07:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:13,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-19 15:07:13,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375143796] [2021-12-19 15:07:13,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375143796] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627237255] [2021-12-19 15:07:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:13,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:13,739 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) [2021-12-19 15:07:13,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:07:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:13,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-19 15:07:13,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:13,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:07:13,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627237255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:13,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 15:07:13,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2021-12-19 15:07:13,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440376556] [2021-12-19 15:07:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:13,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:07:13,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:07:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:07:13,911 INFO L87 Difference]: Start difference. First operand 139 states and 171 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:14,051 INFO L93 Difference]: Finished difference Result 161 states and 197 transitions. [2021-12-19 15:07:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-19 15:07:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-19 15:07:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:14,052 INFO L225 Difference]: With dead ends: 161 [2021-12-19 15:07:14,052 INFO L226 Difference]: Without dead ends: 160 [2021-12-19 15:07:14,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:07:14,053 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:14,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 353 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-19 15:07:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-12-19 15:07:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 118 states have (on average 1.305084745762712) internal successors, (154), 126 states have internal predecessors, (154), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-19 15:07:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2021-12-19 15:07:14,059 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 26 [2021-12-19 15:07:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:14,059 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2021-12-19 15:07:14,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2021-12-19 15:07:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 15:07:14,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:14,060 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:14,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:14,276 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,SelfDestructingSolverStorable12 [2021-12-19 15:07:14,276 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2143137265, now seen corresponding path program 1 times [2021-12-19 15:07:14,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079758924] [2021-12-19 15:07:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:14,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:14,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079758924] [2021-12-19 15:07:14,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079758924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:14,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:07:14,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:07:14,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28618971] [2021-12-19 15:07:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:14,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:07:14,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:07:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:07:14,316 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:14,358 INFO L93 Difference]: Finished difference Result 180 states and 224 transitions. [2021-12-19 15:07:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:07:14,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-19 15:07:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:14,360 INFO L225 Difference]: With dead ends: 180 [2021-12-19 15:07:14,360 INFO L226 Difference]: Without dead ends: 178 [2021-12-19 15:07:14,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:07:14,361 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 52 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:14,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 203 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-19 15:07:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 169. [2021-12-19 15:07:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 131 states have (on average 1.297709923664122) internal successors, (170), 138 states have internal predecessors, (170), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-19 15:07:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 209 transitions. [2021-12-19 15:07:14,369 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 209 transitions. Word has length 27 [2021-12-19 15:07:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:14,369 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 209 transitions. [2021-12-19 15:07:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 209 transitions. [2021-12-19 15:07:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 15:07:14,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:14,372 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:14,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-19 15:07:14,372 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1501881149, now seen corresponding path program 1 times [2021-12-19 15:07:14,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:14,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804556062] [2021-12-19 15:07:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:14,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 15:07:14,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:14,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804556062] [2021-12-19 15:07:14,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804556062] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:14,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146763026] [2021-12-19 15:07:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:14,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:14,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:14,429 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) [2021-12-19 15:07:14,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:07:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-19 15:07:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:14,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:14,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146763026] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:14,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:14,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2021-12-19 15:07:14,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391726783] [2021-12-19 15:07:14,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:14,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-19 15:07:14,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-19 15:07:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-12-19 15:07:14,778 INFO L87 Difference]: Start difference. First operand 169 states and 209 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (9), 8 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:15,213 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2021-12-19 15:07:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-19 15:07:15,214 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (9), 8 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-19 15:07:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:15,216 INFO L225 Difference]: With dead ends: 192 [2021-12-19 15:07:15,216 INFO L226 Difference]: Without dead ends: 190 [2021-12-19 15:07:15,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:07:15,218 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 201 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:15,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 726 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:07:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-19 15:07:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-12-19 15:07:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.2657342657342658) internal successors, (181), 148 states have internal predecessors, (181), 22 states have call successors, (22), 12 states have call predecessors, (22), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-19 15:07:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 224 transitions. [2021-12-19 15:07:15,228 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 224 transitions. Word has length 27 [2021-12-19 15:07:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:15,228 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 224 transitions. [2021-12-19 15:07:15,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (9), 8 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 224 transitions. [2021-12-19 15:07:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-19 15:07:15,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:15,230 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:15,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:15,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:15,446 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1537468884, now seen corresponding path program 1 times [2021-12-19 15:07:15,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:15,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132049296] [2021-12-19 15:07:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:15,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:15,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132049296] [2021-12-19 15:07:15,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132049296] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12565086] [2021-12-19 15:07:15,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:15,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:15,492 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) [2021-12-19 15:07:15,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:07:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:07:15,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:15,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:15,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12565086] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:15,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:15,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2021-12-19 15:07:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158140136] [2021-12-19 15:07:15,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:15,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:07:15,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:07:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:07:15,611 INFO L87 Difference]: Start difference. First operand 182 states and 224 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:15,647 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-12-19 15:07:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:07:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-19 15:07:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:15,649 INFO L225 Difference]: With dead ends: 196 [2021-12-19 15:07:15,649 INFO L226 Difference]: Without dead ends: 148 [2021-12-19 15:07:15,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:07:15,650 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 59 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:15,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 394 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-19 15:07:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2021-12-19 15:07:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 117 states have internal predecessors, (138), 17 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:07:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-12-19 15:07:15,655 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 32 [2021-12-19 15:07:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:15,655 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-12-19 15:07:15,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 15:07:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-12-19 15:07:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-19 15:07:15,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:15,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:15,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:15,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-19 15:07:15,881 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -118239160, now seen corresponding path program 1 times [2021-12-19 15:07:15,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:15,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272323175] [2021-12-19 15:07:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:15,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:15,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272323175] [2021-12-19 15:07:15,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272323175] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482436460] [2021-12-19 15:07:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:15,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:15,913 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) [2021-12-19 15:07:15,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:07:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:15,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:07:15,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:16,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:16,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482436460] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:16,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:16,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-12-19 15:07:16,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383018910] [2021-12-19 15:07:16,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:16,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-19 15:07:16,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-19 15:07:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:07:16,064 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:16,157 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2021-12-19 15:07:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-19 15:07:16,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2021-12-19 15:07:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:16,158 INFO L225 Difference]: With dead ends: 158 [2021-12-19 15:07:16,158 INFO L226 Difference]: Without dead ends: 146 [2021-12-19 15:07:16,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-19 15:07:16,159 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 53 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:16,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 537 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-19 15:07:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-12-19 15:07:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 117 states have internal predecessors, (137), 17 states have call successors, (17), 10 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:07:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2021-12-19 15:07:16,164 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 31 [2021-12-19 15:07:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:16,165 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2021-12-19 15:07:16,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2021-12-19 15:07:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-19 15:07:16,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:16,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:16,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:16,382 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,SelfDestructingSolverStorable16 [2021-12-19 15:07:16,382 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -959786179, now seen corresponding path program 2 times [2021-12-19 15:07:16,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:16,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429768653] [2021-12-19 15:07:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:16,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 15:07:16,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:16,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429768653] [2021-12-19 15:07:16,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429768653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:16,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951574064] [2021-12-19 15:07:16,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:07:16,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:16,433 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) [2021-12-19 15:07:16,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:07:16,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:07:16,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:07:16,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-19 15:07:16,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:16,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951574064] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:16,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2021-12-19 15:07:16,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191293978] [2021-12-19 15:07:16,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:16,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-19 15:07:16,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-19 15:07:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-12-19 15:07:16,799 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 16 states have internal predecessors, (75), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:17,302 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2021-12-19 15:07:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-19 15:07:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 16 states have internal predecessors, (75), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-19 15:07:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:17,304 INFO L225 Difference]: With dead ends: 169 [2021-12-19 15:07:17,304 INFO L226 Difference]: Without dead ends: 168 [2021-12-19 15:07:17,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2021-12-19 15:07:17,305 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 424 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:17,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 589 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:07:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-19 15:07:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 159. [2021-12-19 15:07:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 129 states have internal predecessors, (149), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-19 15:07:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2021-12-19 15:07:17,312 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 32 [2021-12-19 15:07:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:17,312 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2021-12-19 15:07:17,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 16 states have internal predecessors, (75), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2021-12-19 15:07:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-19 15:07:17,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:17,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:17,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-19 15:07:17,527 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,SelfDestructingSolverStorable17 [2021-12-19 15:07:17,528 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 644683350, now seen corresponding path program 1 times [2021-12-19 15:07:17,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:17,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315177128] [2021-12-19 15:07:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:17,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:17,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315177128] [2021-12-19 15:07:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315177128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82713421] [2021-12-19 15:07:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:17,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:17,592 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) [2021-12-19 15:07:17,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:07:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:07:17,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:17,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:17,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82713421] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:17,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:17,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-19 15:07:17,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742798842] [2021-12-19 15:07:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:17,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-19 15:07:17,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-19 15:07:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:07:17,727 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:17,792 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2021-12-19 15:07:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:07:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-12-19 15:07:17,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:17,793 INFO L225 Difference]: With dead ends: 169 [2021-12-19 15:07:17,793 INFO L226 Difference]: Without dead ends: 168 [2021-12-19 15:07:17,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-19 15:07:17,794 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 45 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:17,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 508 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-19 15:07:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2021-12-19 15:07:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 131 states have (on average 1.1755725190839694) internal successors, (154), 133 states have internal predecessors, (154), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) [2021-12-19 15:07:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 193 transitions. [2021-12-19 15:07:17,801 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 193 transitions. Word has length 32 [2021-12-19 15:07:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 193 transitions. [2021-12-19 15:07:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 193 transitions. [2021-12-19 15:07:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-19 15:07:17,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:17,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:17,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:18,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,018 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:18,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1489652536, now seen corresponding path program 1 times [2021-12-19 15:07:18,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:18,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368164281] [2021-12-19 15:07:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:18,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:18,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368164281] [2021-12-19 15:07:18,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368164281] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:18,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857365644] [2021-12-19 15:07:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:18,066 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) [2021-12-19 15:07:18,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:07:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:07:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:18,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:07:18,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857365644] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:18,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:18,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-19 15:07:18,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558261763] [2021-12-19 15:07:18,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:18,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-19 15:07:18,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-19 15:07:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:07:18,222 INFO L87 Difference]: Start difference. First operand 165 states and 193 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:18,275 INFO L93 Difference]: Finished difference Result 167 states and 196 transitions. [2021-12-19 15:07:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-19 15:07:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-12-19 15:07:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:18,276 INFO L225 Difference]: With dead ends: 167 [2021-12-19 15:07:18,276 INFO L226 Difference]: Without dead ends: 162 [2021-12-19 15:07:18,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:07:18,277 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 46 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:18,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 390 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-19 15:07:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2021-12-19 15:07:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.1640625) internal successors, (149), 130 states have internal predecessors, (149), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2021-12-19 15:07:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2021-12-19 15:07:18,282 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 33 [2021-12-19 15:07:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:18,282 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2021-12-19 15:07:18,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-19 15:07:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2021-12-19 15:07:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-19 15:07:18,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:18,283 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:18,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,499 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1095335930, now seen corresponding path program 1 times [2021-12-19 15:07:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:18,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169104722] [2021-12-19 15:07:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-19 15:07:18,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:18,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169104722] [2021-12-19 15:07:18,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169104722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:18,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719744684] [2021-12-19 15:07:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:18,531 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) [2021-12-19 15:07:18,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 15:07:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 15:07:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-19 15:07:18,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-19 15:07:18,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719744684] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:18,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:18,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-19 15:07:18,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416550438] [2021-12-19 15:07:18,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:18,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:07:18,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:07:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:07:18,661 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:18,711 INFO L93 Difference]: Finished difference Result 310 states and 373 transitions. [2021-12-19 15:07:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:07:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-19 15:07:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:18,713 INFO L225 Difference]: With dead ends: 310 [2021-12-19 15:07:18,713 INFO L226 Difference]: Without dead ends: 169 [2021-12-19 15:07:18,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:07:18,714 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 34 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:18,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 292 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-19 15:07:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2021-12-19 15:07:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.144) internal successors, (143), 126 states have internal predecessors, (143), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-12-19 15:07:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2021-12-19 15:07:18,719 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 38 [2021-12-19 15:07:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:18,720 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2021-12-19 15:07:18,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2021-12-19 15:07:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-19 15:07:18,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:18,720 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:18,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:18,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,937 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash -350622166, now seen corresponding path program 1 times [2021-12-19 15:07:18,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:18,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190510443] [2021-12-19 15:07:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 15:07:18,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:18,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190510443] [2021-12-19 15:07:18,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190510443] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:18,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635200678] [2021-12-19 15:07:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:18,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:18,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:18,967 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) [2021-12-19 15:07:18,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 15:07:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:18,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-19 15:07:18,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-19 15:07:19,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:07:19,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635200678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:07:19,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 15:07:19,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-12-19 15:07:19,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173631379] [2021-12-19 15:07:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:07:19,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:07:19,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:07:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:07:19,109 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:19,215 INFO L93 Difference]: Finished difference Result 164 states and 189 transitions. [2021-12-19 15:07:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:07:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-19 15:07:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:19,216 INFO L225 Difference]: With dead ends: 164 [2021-12-19 15:07:19,216 INFO L226 Difference]: Without dead ends: 163 [2021-12-19 15:07:19,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-19 15:07:19,217 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 59 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 250 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-19 15:07:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2021-12-19 15:07:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2021-12-19 15:07:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2021-12-19 15:07:19,222 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 40 [2021-12-19 15:07:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:19,222 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2021-12-19 15:07:19,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:07:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2021-12-19 15:07:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-19 15:07:19,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:19,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:19,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:19,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-19 15:07:19,439 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash 287216546, now seen corresponding path program 1 times [2021-12-19 15:07:19,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:19,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007266484] [2021-12-19 15:07:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:19,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:19,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:19,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007266484] [2021-12-19 15:07:19,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007266484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:19,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579799439] [2021-12-19 15:07:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:19,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:19,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:19,518 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) [2021-12-19 15:07:19,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 15:07:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:19,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-19 15:07:19,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:19,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 15:07:19,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579799439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:19,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:19,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-19 15:07:19,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050751412] [2021-12-19 15:07:19,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:19,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-19 15:07:19,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:19,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-19 15:07:19,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:07:19,807 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-19 15:07:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:19,930 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2021-12-19 15:07:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:07:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 44 [2021-12-19 15:07:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:19,931 INFO L225 Difference]: With dead ends: 170 [2021-12-19 15:07:19,931 INFO L226 Difference]: Without dead ends: 165 [2021-12-19 15:07:19,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-12-19 15:07:19,932 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:19,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 705 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:07:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-19 15:07:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-12-19 15:07:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 133 states have internal predecessors, (149), 18 states have call successors, (18), 11 states have call predecessors, (18), 13 states have return successors, (20), 20 states have call predecessors, (20), 17 states have call successors, (20) [2021-12-19 15:07:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2021-12-19 15:07:19,937 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 44 [2021-12-19 15:07:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:19,938 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2021-12-19 15:07:19,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-19 15:07:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2021-12-19 15:07:19,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-19 15:07:19,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:19,938 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:19,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:20,152 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,SelfDestructingSolverStorable22 [2021-12-19 15:07:20,152 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2078564830, now seen corresponding path program 2 times [2021-12-19 15:07:20,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:20,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762562747] [2021-12-19 15:07:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:20,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-19 15:07:20,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:20,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762562747] [2021-12-19 15:07:20,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762562747] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245411557] [2021-12-19 15:07:20,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:07:20,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:20,308 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) [2021-12-19 15:07:20,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 15:07:20,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:07:20,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:07:20,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-19 15:07:20,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-19 15:07:20,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-19 15:07:21,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245411557] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:07:21,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:07:21,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2021-12-19 15:07:21,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049451801] [2021-12-19 15:07:21,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:21,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-19 15:07:21,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-19 15:07:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:07:21,112 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-19 15:07:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:21,463 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2021-12-19 15:07:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-19 15:07:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 68 [2021-12-19 15:07:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:21,465 INFO L225 Difference]: With dead ends: 194 [2021-12-19 15:07:21,465 INFO L226 Difference]: Without dead ends: 185 [2021-12-19 15:07:21,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2021-12-19 15:07:21,466 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 199 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:21,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 835 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:07:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-19 15:07:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-19 15:07:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 149 states have (on average 1.1073825503355705) internal successors, (165), 149 states have internal predecessors, (165), 18 states have call successors, (18), 11 states have call predecessors, (18), 17 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2021-12-19 15:07:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2021-12-19 15:07:21,470 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 68 [2021-12-19 15:07:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:21,470 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2021-12-19 15:07:21,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-19 15:07:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2021-12-19 15:07:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-19 15:07:21,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:21,471 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:21,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:21,705 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,SelfDestructingSolverStorable23 [2021-12-19 15:07:21,706 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1185635234, now seen corresponding path program 3 times [2021-12-19 15:07:21,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:21,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438675479] [2021-12-19 15:07:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:21,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:07:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-19 15:07:22,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438675479] [2021-12-19 15:07:22,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438675479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121884059] [2021-12-19 15:07:22,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:07:22,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:22,001 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) [2021-12-19 15:07:22,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 15:07:22,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 15:07:22,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:07:22,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-19 15:07:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-19 15:07:22,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:07:26,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121884059] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:26,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:07:26,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2021-12-19 15:07:26,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483014850] [2021-12-19 15:07:26,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:07:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-19 15:07:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:07:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-19 15:07:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2021-12-19 15:07:26,583 INFO L87 Difference]: Start difference. First operand 185 states and 207 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-19 15:07:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:07:27,254 INFO L93 Difference]: Finished difference Result 194 states and 217 transitions. [2021-12-19 15:07:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-19 15:07:27,255 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) Word has length 130 [2021-12-19 15:07:27,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:07:27,256 INFO L225 Difference]: With dead ends: 194 [2021-12-19 15:07:27,256 INFO L226 Difference]: Without dead ends: 191 [2021-12-19 15:07:27,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=354, Invalid=2402, Unknown=0, NotChecked=0, Total=2756 [2021-12-19 15:07:27,257 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 135 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:07:27,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 993 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:07:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-19 15:07:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-12-19 15:07:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 153 states have (on average 1.1045751633986929) internal successors, (169), 153 states have internal predecessors, (169), 18 states have call successors, (18), 11 states have call predecessors, (18), 18 states have return successors, (25), 25 states have call predecessors, (25), 17 states have call successors, (25) [2021-12-19 15:07:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-12-19 15:07:27,271 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 130 [2021-12-19 15:07:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:07:27,272 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-12-19 15:07:27,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-19 15:07:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-12-19 15:07:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-19 15:07:27,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:07:27,275 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:07:27,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 15:07:27,507 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,SelfDestructingSolverStorable24 [2021-12-19 15:07:27,508 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:07:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:07:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash -36914090, now seen corresponding path program 4 times [2021-12-19 15:07:27,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:07:27,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137182092] [2021-12-19 15:07:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:07:27,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:07:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:07:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:07:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:07:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:07:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-19 15:07:27,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:07:27,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137182092] [2021-12-19 15:07:27,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137182092] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:07:27,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535632694] [2021-12-19 15:07:27,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:07:27,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:07:27,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:07:27,854 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) [2021-12-19 15:07:27,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 15:07:27,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:07:27,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:07:27,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-19 15:07:27,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:07:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-19 15:07:28,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:17,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535632694] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:17,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:17,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2021-12-19 15:08:17,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246098483] [2021-12-19 15:08:17,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:17,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-19 15:08:17,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-19 15:08:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1298, Unknown=22, NotChecked=0, Total=1482 [2021-12-19 15:08:17,662 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (5), 2 states have call predecessors, (5), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-19 15:08:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:18,654 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2021-12-19 15:08:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-19 15:08:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (5), 2 states have call predecessors, (5), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) Word has length 128 [2021-12-19 15:08:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:18,657 INFO L225 Difference]: With dead ends: 199 [2021-12-19 15:08:18,657 INFO L226 Difference]: Without dead ends: 196 [2021-12-19 15:08:18,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=394, Invalid=2890, Unknown=22, NotChecked=0, Total=3306 [2021-12-19 15:08:18,658 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 114 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:18,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1273 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-19 15:08:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-19 15:08:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-19 15:08:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 157 states have (on average 1.1019108280254777) internal successors, (173), 157 states have internal predecessors, (173), 18 states have call successors, (18), 11 states have call predecessors, (18), 19 states have return successors, (26), 26 states have call predecessors, (26), 17 states have call successors, (26) [2021-12-19 15:08:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2021-12-19 15:08:18,665 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 128 [2021-12-19 15:08:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:18,665 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2021-12-19 15:08:18,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (5), 2 states have call predecessors, (5), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-19 15:08:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2021-12-19 15:08:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-19 15:08:18,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:18,668 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:18,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-19 15:08:18,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:18,879 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1195834786, now seen corresponding path program 5 times [2021-12-19 15:08:18,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:18,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707006398] [2021-12-19 15:08:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:18,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:08:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-19 15:08:19,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707006398] [2021-12-19 15:08:19,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707006398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896556986] [2021-12-19 15:08:19,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:08:19,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:19,417 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) [2021-12-19 15:08:19,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 15:08:19,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-19 15:08:19,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:08:19,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-19 15:08:19,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-19 15:08:20,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:22,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896556986] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:22,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:22,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2021-12-19 15:08:22,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268400370] [2021-12-19 15:08:22,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:22,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-19 15:08:22,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:22,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-19 15:08:22,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2021-12-19 15:08:22,013 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-19 15:08:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:23,137 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2021-12-19 15:08:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-19 15:08:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) Word has length 140 [2021-12-19 15:08:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:23,139 INFO L225 Difference]: With dead ends: 204 [2021-12-19 15:08:23,139 INFO L226 Difference]: Without dead ends: 201 [2021-12-19 15:08:23,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-12-19 15:08:23,140 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:23,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1629 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 15:08:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-19 15:08:23,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-12-19 15:08:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 161 states have internal predecessors, (177), 18 states have call successors, (18), 11 states have call predecessors, (18), 20 states have return successors, (27), 27 states have call predecessors, (27), 17 states have call successors, (27) [2021-12-19 15:08:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2021-12-19 15:08:23,145 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 140 [2021-12-19 15:08:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:23,145 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2021-12-19 15:08:23,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-19 15:08:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2021-12-19 15:08:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-19 15:08:23,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:23,146 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:23,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-19 15:08:23,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-19 15:08:23,358 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash -583518762, now seen corresponding path program 6 times [2021-12-19 15:08:23,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:23,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446995250] [2021-12-19 15:08:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:23,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:08:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-19 15:08:24,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:24,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446995250] [2021-12-19 15:08:24,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446995250] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:24,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844846961] [2021-12-19 15:08:24,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:08:24,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:24,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:24,018 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) [2021-12-19 15:08:24,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 15:08:24,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-12-19 15:08:24,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:08:24,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-19 15:08:24,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-19 15:08:24,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844846961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:33,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:33,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2021-12-19 15:08:33,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237628614] [2021-12-19 15:08:33,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:33,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-19 15:08:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-19 15:08:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1786, Unknown=2, NotChecked=0, Total=1980 [2021-12-19 15:08:33,271 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-19 15:08:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:34,580 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2021-12-19 15:08:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-19 15:08:34,580 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) Word has length 152 [2021-12-19 15:08:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:34,581 INFO L225 Difference]: With dead ends: 209 [2021-12-19 15:08:34,581 INFO L226 Difference]: Without dead ends: 206 [2021-12-19 15:08:34,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 159 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=474, Invalid=4080, Unknown=2, NotChecked=0, Total=4556 [2021-12-19 15:08:34,583 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 133 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:34,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1890 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 15:08:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-19 15:08:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2021-12-19 15:08:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 165 states have (on average 1.096969696969697) internal successors, (181), 165 states have internal predecessors, (181), 18 states have call successors, (18), 11 states have call predecessors, (18), 21 states have return successors, (28), 28 states have call predecessors, (28), 17 states have call successors, (28) [2021-12-19 15:08:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 227 transitions. [2021-12-19 15:08:34,588 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 227 transitions. Word has length 152 [2021-12-19 15:08:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 227 transitions. [2021-12-19 15:08:34,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-19 15:08:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 227 transitions. [2021-12-19 15:08:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-19 15:08:34,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:34,590 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:34,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-19 15:08:34,790 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,SelfDestructingSolverStorable27 [2021-12-19 15:08:34,790 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -840822622, now seen corresponding path program 7 times [2021-12-19 15:08:34,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064934933] [2021-12-19 15:08:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:34,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:08:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2021-12-19 15:08:35,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064934933] [2021-12-19 15:08:35,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064934933] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853783487] [2021-12-19 15:08:35,530 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:08:35,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:35,531 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) [2021-12-19 15:08:35,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 15:08:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:35,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-19 15:08:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2021-12-19 15:08:36,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:40,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853783487] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:40,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:40,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2021-12-19 15:08:40,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948738682] [2021-12-19 15:08:40,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:40,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-19 15:08:40,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:40,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-19 15:08:40,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 15:08:40,378 INFO L87 Difference]: Start difference. First operand 205 states and 227 transitions. Second operand has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (6), 2 states have call predecessors, (6), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-19 15:08:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:41,577 INFO L93 Difference]: Finished difference Result 214 states and 237 transitions. [2021-12-19 15:08:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-19 15:08:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (6), 2 states have call predecessors, (6), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) Word has length 178 [2021-12-19 15:08:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:41,582 INFO L225 Difference]: With dead ends: 214 [2021-12-19 15:08:41,582 INFO L226 Difference]: Without dead ends: 211 [2021-12-19 15:08:41,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 189 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=514, Invalid=4742, Unknown=0, NotChecked=0, Total=5256 [2021-12-19 15:08:41,588 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 143 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1822 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 15:08:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-19 15:08:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-12-19 15:08:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 169 states have (on average 1.0946745562130178) internal successors, (185), 169 states have internal predecessors, (185), 18 states have call successors, (18), 11 states have call predecessors, (18), 22 states have return successors, (29), 29 states have call predecessors, (29), 17 states have call successors, (29) [2021-12-19 15:08:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2021-12-19 15:08:41,617 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 178 [2021-12-19 15:08:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:41,618 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2021-12-19 15:08:41,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (6), 2 states have call predecessors, (6), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-19 15:08:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2021-12-19 15:08:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-19 15:08:41,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:41,620 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:41,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-19 15:08:41,835 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,SelfDestructingSolverStorable28 [2021-12-19 15:08:41,835 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:41,835 INFO L85 PathProgramCache]: Analyzing trace with hash 532682710, now seen corresponding path program 8 times [2021-12-19 15:08:41,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:41,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976734275] [2021-12-19 15:08:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:41,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:08:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 0 proven. 678 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-12-19 15:08:42,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:42,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976734275] [2021-12-19 15:08:42,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976734275] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:42,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061033889] [2021-12-19 15:08:42,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:08:42,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:42,639 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) [2021-12-19 15:08:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-19 15:08:42,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:08:42,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:08:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-19 15:08:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 0 proven. 678 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-12-19 15:08:43,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:47,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061033889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:47,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:47,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2021-12-19 15:08:47,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908193647] [2021-12-19 15:08:47,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:47,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 15:08:47,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:47,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 15:08:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 15:08:47,244 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (6), 2 states have call predecessors, (6), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-19 15:08:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:49,028 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2021-12-19 15:08:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-19 15:08:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (6), 2 states have call predecessors, (6), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) Word has length 190 [2021-12-19 15:08:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:49,029 INFO L225 Difference]: With dead ends: 219 [2021-12-19 15:08:49,029 INFO L226 Difference]: Without dead ends: 216 [2021-12-19 15:08:49,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 198 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=427, Invalid=5123, Unknown=0, NotChecked=0, Total=5550 [2021-12-19 15:08:49,031 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 200 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:49,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1709 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-19 15:08:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-19 15:08:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-12-19 15:08:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 173 states have (on average 1.092485549132948) internal successors, (189), 173 states have internal predecessors, (189), 18 states have call successors, (18), 11 states have call predecessors, (18), 23 states have return successors, (30), 30 states have call predecessors, (30), 17 states have call successors, (30) [2021-12-19 15:08:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2021-12-19 15:08:49,037 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 190 [2021-12-19 15:08:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:49,038 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2021-12-19 15:08:49,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (6), 2 states have call predecessors, (6), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-19 15:08:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2021-12-19 15:08:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-19 15:08:49,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:49,040 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:49,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-19 15:08:49,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:49,257 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1969189538, now seen corresponding path program 9 times [2021-12-19 15:08:49,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:49,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973310855] [2021-12-19 15:08:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:49,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:08:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-12-19 15:08:50,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:50,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973310855] [2021-12-19 15:08:50,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973310855] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:50,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944546042] [2021-12-19 15:08:50,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:08:50,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:50,156 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) [2021-12-19 15:08:50,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-19 15:08:50,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-19 15:08:50,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:08:50,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-19 15:08:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-12-19 15:08:51,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:08:55,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944546042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:55,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:08:55,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2021-12-19 15:08:55,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818729529] [2021-12-19 15:08:55,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:08:55,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-19 15:08:55,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:08:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-19 15:08:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2021-12-19 15:08:55,386 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-19 15:08:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:08:57,287 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2021-12-19 15:08:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-19 15:08:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) Word has length 188 [2021-12-19 15:08:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:08:57,289 INFO L225 Difference]: With dead ends: 224 [2021-12-19 15:08:57,289 INFO L226 Difference]: Without dead ends: 221 [2021-12-19 15:08:57,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 192 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=458, Invalid=5862, Unknown=0, NotChecked=0, Total=6320 [2021-12-19 15:08:57,291 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 164 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-19 15:08:57,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 2383 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-19 15:08:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-19 15:08:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-12-19 15:08:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 177 states have (on average 1.0903954802259888) internal successors, (193), 177 states have internal predecessors, (193), 18 states have call successors, (18), 11 states have call predecessors, (18), 24 states have return successors, (31), 31 states have call predecessors, (31), 17 states have call successors, (31) [2021-12-19 15:08:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2021-12-19 15:08:57,297 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 188 [2021-12-19 15:08:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:08:57,298 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 242 transitions. [2021-12-19 15:08:57,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-19 15:08:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 242 transitions. [2021-12-19 15:08:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-19 15:08:57,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:08:57,299 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:08:57,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-19 15:08:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:57,500 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:08:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:08:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 152373462, now seen corresponding path program 10 times [2021-12-19 15:08:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:08:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333311774] [2021-12-19 15:08:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:08:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:08:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:08:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:08:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:08:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:08:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2021-12-19 15:08:58,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:08:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333311774] [2021-12-19 15:08:58,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333311774] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:08:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013236601] [2021-12-19 15:08:58,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:08:58,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:08:58,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:08:58,406 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) [2021-12-19 15:08:58,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-19 15:08:58,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:08:58,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:08:58,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-19 15:08:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:08:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2021-12-19 15:08:59,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:09:03,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013236601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:09:03,595 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:09:03,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2021-12-19 15:09:03,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170965936] [2021-12-19 15:09:03,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:09:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-19 15:09:03,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:09:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-19 15:09:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2021-12-19 15:09:03,597 INFO L87 Difference]: Start difference. First operand 220 states and 242 transitions. Second operand has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-19 15:09:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:09:05,573 INFO L93 Difference]: Finished difference Result 229 states and 252 transitions. [2021-12-19 15:09:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-19 15:09:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) Word has length 200 [2021-12-19 15:09:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:09:05,596 INFO L225 Difference]: With dead ends: 229 [2021-12-19 15:09:05,596 INFO L226 Difference]: Without dead ends: 226 [2021-12-19 15:09:05,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 204 SyntacticMatches, 13 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=489, Invalid=6651, Unknown=0, NotChecked=0, Total=7140 [2021-12-19 15:09:05,598 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 173 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:09:05,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2833 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-19 15:09:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-19 15:09:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2021-12-19 15:09:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 181 states have (on average 1.0883977900552486) internal successors, (197), 181 states have internal predecessors, (197), 18 states have call successors, (18), 11 states have call predecessors, (18), 25 states have return successors, (32), 32 states have call predecessors, (32), 17 states have call successors, (32) [2021-12-19 15:09:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 247 transitions. [2021-12-19 15:09:05,604 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 247 transitions. Word has length 200 [2021-12-19 15:09:05,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:09:05,604 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 247 transitions. [2021-12-19 15:09:05,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (5), 2 states have call predecessors, (5), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-19 15:09:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 247 transitions. [2021-12-19 15:09:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-19 15:09:05,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:09:05,606 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:09:05,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-19 15:09:05,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-19 15:09:05,823 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:09:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:09:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 665208226, now seen corresponding path program 11 times [2021-12-19 15:09:05,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:09:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069064688] [2021-12-19 15:09:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:09:05,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:09:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:09:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:09:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-12-19 15:09:06,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:09:06,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069064688] [2021-12-19 15:09:06,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069064688] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:09:06,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862141197] [2021-12-19 15:09:06,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:09:06,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:09:06,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:09:06,798 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) [2021-12-19 15:09:06,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-19 15:09:07,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-12-19 15:09:07,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:09:07,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-19 15:09:07,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:09:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-12-19 15:09:08,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:09:52,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862141197] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:09:52,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:09:52,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2021-12-19 15:09:52,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766342998] [2021-12-19 15:09:52,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:09:52,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-19 15:09:52,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:09:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-19 15:09:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=3255, Unknown=18, NotChecked=0, Total=3540 [2021-12-19 15:09:52,539 INFO L87 Difference]: Start difference. First operand 225 states and 247 transitions. Second operand has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-19 15:09:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:09:55,003 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2021-12-19 15:09:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-19 15:09:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) Word has length 226 [2021-12-19 15:09:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:09:55,005 INFO L225 Difference]: With dead ends: 234 [2021-12-19 15:09:55,005 INFO L226 Difference]: Without dead ends: 231 [2021-12-19 15:09:55,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=674, Invalid=7864, Unknown=18, NotChecked=0, Total=8556 [2021-12-19 15:09:55,006 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 239 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:09:55,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 2171 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-19 15:09:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-19 15:09:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-12-19 15:09:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.0864864864864865) internal successors, (201), 185 states have internal predecessors, (201), 18 states have call successors, (18), 11 states have call predecessors, (18), 26 states have return successors, (33), 33 states have call predecessors, (33), 17 states have call successors, (33) [2021-12-19 15:09:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 252 transitions. [2021-12-19 15:09:55,010 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 252 transitions. Word has length 226 [2021-12-19 15:09:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:09:55,011 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 252 transitions. [2021-12-19 15:09:55,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-19 15:09:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 252 transitions. [2021-12-19 15:09:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-19 15:09:55,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:09:55,012 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:09:55,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-19 15:09:55,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-19 15:09:55,237 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:09:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:09:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2113299030, now seen corresponding path program 12 times [2021-12-19 15:09:55,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:09:55,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885243841] [2021-12-19 15:09:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:09:55,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:09:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:09:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:09:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:09:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:09:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-12-19 15:09:56,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:09:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885243841] [2021-12-19 15:09:56,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885243841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:09:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112703921] [2021-12-19 15:09:56,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:09:56,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:09:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:09:56,351 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) [2021-12-19 15:09:56,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-19 15:09:56,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-12-19 15:09:56,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:09:56,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-19 15:09:56,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:09:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-12-19 15:09:58,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:10:04,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112703921] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:04,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:10:04,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2021-12-19 15:10:04,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610740980] [2021-12-19 15:10:04,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:10:04,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-19 15:10:04,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:10:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-19 15:10:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2021-12-19 15:10:04,214 INFO L87 Difference]: Start difference. First operand 230 states and 252 transitions. Second operand has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-19 15:10:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:10:06,491 INFO L93 Difference]: Finished difference Result 239 states and 262 transitions. [2021-12-19 15:10:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-19 15:10:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) Word has length 224 [2021-12-19 15:10:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:10:06,493 INFO L225 Difference]: With dead ends: 239 [2021-12-19 15:10:06,493 INFO L226 Difference]: Without dead ends: 236 [2021-12-19 15:10:06,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 228 SyntacticMatches, 15 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=551, Invalid=8379, Unknown=0, NotChecked=0, Total=8930 [2021-12-19 15:10:06,494 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 194 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:10:06,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 2910 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-19 15:10:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-19 15:10:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2021-12-19 15:10:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 189 states have (on average 1.0846560846560847) internal successors, (205), 189 states have internal predecessors, (205), 18 states have call successors, (18), 11 states have call predecessors, (18), 27 states have return successors, (34), 34 states have call predecessors, (34), 17 states have call successors, (34) [2021-12-19 15:10:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2021-12-19 15:10:06,500 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 224 [2021-12-19 15:10:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:10:06,501 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2021-12-19 15:10:06,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-19 15:10:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2021-12-19 15:10:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-19 15:10:06,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:10:06,503 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:10:06,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-19 15:10:06,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:06,715 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:10:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:10:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1020958814, now seen corresponding path program 13 times [2021-12-19 15:10:06,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:10:06,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046333033] [2021-12-19 15:10:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:10:06,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:10:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:10:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:10:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2021-12-19 15:10:07,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:10:07,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046333033] [2021-12-19 15:10:07,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046333033] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:07,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271441825] [2021-12-19 15:10:07,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:10:07,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:10:07,907 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) [2021-12-19 15:10:07,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-19 15:10:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:08,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-19 15:10:08,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:10:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2021-12-19 15:10:10,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:10:16,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271441825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:16,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:10:16,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2021-12-19 15:10:16,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878236987] [2021-12-19 15:10:16,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:10:16,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-19 15:10:16,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:10:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-19 15:10:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2021-12-19 15:10:16,217 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2021-12-19 15:10:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:10:18,608 INFO L93 Difference]: Finished difference Result 244 states and 267 transitions. [2021-12-19 15:10:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-19 15:10:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) Word has length 236 [2021-12-19 15:10:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:10:18,609 INFO L225 Difference]: With dead ends: 244 [2021-12-19 15:10:18,609 INFO L226 Difference]: Without dead ends: 241 [2021-12-19 15:10:18,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 240 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=582, Invalid=9318, Unknown=0, NotChecked=0, Total=9900 [2021-12-19 15:10:18,610 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 203 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:10:18,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 3344 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-19 15:10:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-19 15:10:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-12-19 15:10:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 193 states have (on average 1.0829015544041452) internal successors, (209), 193 states have internal predecessors, (209), 18 states have call successors, (18), 11 states have call predecessors, (18), 28 states have return successors, (35), 35 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-19 15:10:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 262 transitions. [2021-12-19 15:10:18,615 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 262 transitions. Word has length 236 [2021-12-19 15:10:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:10:18,615 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 262 transitions. [2021-12-19 15:10:18,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2021-12-19 15:10:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 262 transitions. [2021-12-19 15:10:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-12-19 15:10:18,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:10:18,616 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:10:18,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-19 15:10:18,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:18,831 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:10:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:10:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash 755475542, now seen corresponding path program 14 times [2021-12-19 15:10:18,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:10:18,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178072079] [2021-12-19 15:10:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:10:18,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:10:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:10:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:10:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-12-19 15:10:20,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:10:20,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178072079] [2021-12-19 15:10:20,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178072079] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:20,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046954673] [2021-12-19 15:10:20,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:10:20,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:20,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:10:20,200 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) [2021-12-19 15:10:20,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-19 15:10:20,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:10:20,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:10:20,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-19 15:10:20,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:10:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-12-19 15:10:22,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:10:30,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046954673] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:30,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:10:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2021-12-19 15:10:30,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821127772] [2021-12-19 15:10:30,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:10:30,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-19 15:10:30,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:10:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-19 15:10:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4082, Unknown=0, NotChecked=0, Total=4290 [2021-12-19 15:10:30,124 INFO L87 Difference]: Start difference. First operand 240 states and 262 transitions. Second operand has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-19 15:10:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:10:33,238 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2021-12-19 15:10:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-19 15:10:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) Word has length 262 [2021-12-19 15:10:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:10:33,239 INFO L225 Difference]: With dead ends: 249 [2021-12-19 15:10:33,239 INFO L226 Difference]: Without dead ends: 246 [2021-12-19 15:10:33,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=613, Invalid=10307, Unknown=0, NotChecked=0, Total=10920 [2021-12-19 15:10:33,241 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 214 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:10:33,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 3563 Invalid, 3891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-19 15:10:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-19 15:10:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2021-12-19 15:10:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 197 states have (on average 1.0812182741116751) internal successors, (213), 197 states have internal predecessors, (213), 18 states have call successors, (18), 11 states have call predecessors, (18), 29 states have return successors, (36), 36 states have call predecessors, (36), 17 states have call successors, (36) [2021-12-19 15:10:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 267 transitions. [2021-12-19 15:10:33,247 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 267 transitions. Word has length 262 [2021-12-19 15:10:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:10:33,248 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 267 transitions. [2021-12-19 15:10:33,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-19 15:10:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 267 transitions. [2021-12-19 15:10:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-19 15:10:33,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:10:33,251 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:10:33,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-19 15:10:33,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-19 15:10:33,484 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:10:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:10:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2082304546, now seen corresponding path program 15 times [2021-12-19 15:10:33,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:10:33,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284800709] [2021-12-19 15:10:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:10:33,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:10:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:10:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:10:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-12-19 15:10:34,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:10:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284800709] [2021-12-19 15:10:34,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284800709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086204301] [2021-12-19 15:10:34,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:10:34,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:34,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:10:34,806 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) [2021-12-19 15:10:34,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-19 15:10:35,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-12-19 15:10:35,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:10:35,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-19 15:10:35,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:10:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-12-19 15:10:37,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:10:45,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086204301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:45,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:10:45,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2021-12-19 15:10:45,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488372510] [2021-12-19 15:10:45,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:10:45,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-19 15:10:45,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:10:45,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-19 15:10:45,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=4474, Unknown=0, NotChecked=0, Total=4692 [2021-12-19 15:10:45,351 INFO L87 Difference]: Start difference. First operand 245 states and 267 transitions. Second operand has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-19 15:10:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:10:49,212 INFO L93 Difference]: Finished difference Result 254 states and 277 transitions. [2021-12-19 15:10:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-19 15:10:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) Word has length 260 [2021-12-19 15:10:49,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:10:49,214 INFO L225 Difference]: With dead ends: 254 [2021-12-19 15:10:49,214 INFO L226 Difference]: Without dead ends: 251 [2021-12-19 15:10:49,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 264 SyntacticMatches, 18 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=644, Invalid=11346, Unknown=0, NotChecked=0, Total=11990 [2021-12-19 15:10:49,215 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 291 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 4571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:10:49,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2815 Invalid, 4571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-19 15:10:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-19 15:10:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2021-12-19 15:10:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 201 states have (on average 1.0796019900497513) internal successors, (217), 201 states have internal predecessors, (217), 18 states have call successors, (18), 11 states have call predecessors, (18), 30 states have return successors, (37), 37 states have call predecessors, (37), 17 states have call successors, (37) [2021-12-19 15:10:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 272 transitions. [2021-12-19 15:10:49,220 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 272 transitions. Word has length 260 [2021-12-19 15:10:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:10:49,220 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 272 transitions. [2021-12-19 15:10:49,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-19 15:10:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 272 transitions. [2021-12-19 15:10:49,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-19 15:10:49,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:10:49,221 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:10:49,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-19 15:10:49,442 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,SelfDestructingSolverStorable36 [2021-12-19 15:10:49,443 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:10:49,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:10:49,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1640545750, now seen corresponding path program 16 times [2021-12-19 15:10:49,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:10:49,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621107422] [2021-12-19 15:10:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:10:49,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:10:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:10:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:10:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:10:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:10:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-12-19 15:10:50,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:10:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621107422] [2021-12-19 15:10:50,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621107422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:10:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411840681] [2021-12-19 15:10:50,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:10:50,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:10:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:10:50,876 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) [2021-12-19 15:10:50,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-19 15:10:51,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:10:51,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:10:51,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-19 15:10:51,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:10:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-12-19 15:10:53,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:11:02,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411840681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:11:02,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:11:02,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 69 [2021-12-19 15:11:02,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330711002] [2021-12-19 15:11:02,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:11:02,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-19 15:11:02,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:11:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-19 15:11:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2021-12-19 15:11:02,396 INFO L87 Difference]: Start difference. First operand 250 states and 272 transitions. Second operand has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-19 15:11:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:11:05,982 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2021-12-19 15:11:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-19 15:11:05,983 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) Word has length 286 [2021-12-19 15:11:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:11:06,000 INFO L225 Difference]: With dead ends: 259 [2021-12-19 15:11:06,000 INFO L226 Difference]: Without dead ends: 256 [2021-12-19 15:11:06,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 294 SyntacticMatches, 19 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=675, Invalid=12435, Unknown=0, NotChecked=0, Total=13110 [2021-12-19 15:11:06,002 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 304 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-19 15:11:06,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 3113 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-19 15:11:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-19 15:11:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2021-12-19 15:11:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 205 states have (on average 1.078048780487805) internal successors, (221), 205 states have internal predecessors, (221), 18 states have call successors, (18), 11 states have call predecessors, (18), 31 states have return successors, (38), 38 states have call predecessors, (38), 17 states have call successors, (38) [2021-12-19 15:11:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2021-12-19 15:11:06,022 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 286 [2021-12-19 15:11:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:11:06,022 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2021-12-19 15:11:06,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-19 15:11:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2021-12-19 15:11:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-19 15:11:06,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:11:06,024 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:11:06,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-19 15:11:06,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-19 15:11:06,225 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:11:06,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:11:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1993923746, now seen corresponding path program 17 times [2021-12-19 15:11:06,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:11:06,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985182841] [2021-12-19 15:11:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:11:06,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:11:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:11:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:11:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:11:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:11:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 1348 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2021-12-19 15:11:07,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:11:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985182841] [2021-12-19 15:11:07,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985182841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:11:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725118229] [2021-12-19 15:11:07,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:11:07,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:11:07,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:11:07,883 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:11:07,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-19 15:11:08,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-19 15:11:08,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:11:08,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-19 15:11:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:11:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 1348 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2021-12-19 15:11:11,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:12:00,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725118229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:00,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:12:00,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 72 [2021-12-19 15:12:00,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11734456] [2021-12-19 15:12:00,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:12:00,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-19 15:12:00,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:12:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-19 15:12:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=5634, Unknown=15, NotChecked=0, Total=6006 [2021-12-19 15:12:00,762 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-19 15:12:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:12:04,837 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2021-12-19 15:12:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-19 15:12:04,838 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) Word has length 284 [2021-12-19 15:12:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:12:04,839 INFO L225 Difference]: With dead ends: 264 [2021-12-19 15:12:04,839 INFO L226 Difference]: Without dead ends: 261 [2021-12-19 15:12:04,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 291 SyntacticMatches, 20 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=914, Invalid=14077, Unknown=15, NotChecked=0, Total=15006 [2021-12-19 15:12:04,840 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 243 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:12:04,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 3954 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-19 15:12:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-19 15:12:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-19 15:12:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 209 states have (on average 1.076555023923445) internal successors, (225), 209 states have internal predecessors, (225), 18 states have call successors, (18), 11 states have call predecessors, (18), 32 states have return successors, (39), 39 states have call predecessors, (39), 17 states have call successors, (39) [2021-12-19 15:12:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 282 transitions. [2021-12-19 15:12:04,855 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 282 transitions. Word has length 284 [2021-12-19 15:12:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:12:04,866 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 282 transitions. [2021-12-19 15:12:04,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (5), 2 states have call predecessors, (5), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-19 15:12:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 282 transitions. [2021-12-19 15:12:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-12-19 15:12:04,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:12:04,868 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:12:04,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-19 15:12:05,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-19 15:12:05,083 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:12:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:12:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1392103722, now seen corresponding path program 18 times [2021-12-19 15:12:05,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:12:05,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744045551] [2021-12-19 15:12:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:12:05,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:12:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:12:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:12:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-12-19 15:12:06,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:12:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744045551] [2021-12-19 15:12:06,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744045551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675829917] [2021-12-19 15:12:06,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:12:06,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:12:06,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:12:06,789 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:12:06,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-19 15:12:07,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-12-19 15:12:07,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:12:07,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-19 15:12:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:12:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-12-19 15:12:10,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:12:25,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675829917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:25,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:12:25,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 75 [2021-12-19 15:12:25,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238261769] [2021-12-19 15:12:25,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:12:25,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-19 15:12:25,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:12:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-19 15:12:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5757, Unknown=1, NotChecked=0, Total=6006 [2021-12-19 15:12:25,696 INFO L87 Difference]: Start difference. First operand 260 states and 282 transitions. Second operand has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-19 15:12:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:12:30,581 INFO L93 Difference]: Finished difference Result 269 states and 292 transitions. [2021-12-19 15:12:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-19 15:12:30,581 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) Word has length 296 [2021-12-19 15:12:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:12:30,582 INFO L225 Difference]: With dead ends: 269 [2021-12-19 15:12:30,582 INFO L226 Difference]: Without dead ends: 266 [2021-12-19 15:12:30,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 300 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=737, Invalid=14762, Unknown=1, NotChecked=0, Total=15500 [2021-12-19 15:12:30,584 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 329 mSDsluCounter, 4106 mSDsCounter, 0 mSdLazyCounter, 5386 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 5386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:12:30,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 4187 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 5386 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-19 15:12:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-19 15:12:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2021-12-19 15:12:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 213 states have (on average 1.0751173708920188) internal successors, (229), 213 states have internal predecessors, (229), 18 states have call successors, (18), 11 states have call predecessors, (18), 33 states have return successors, (40), 40 states have call predecessors, (40), 17 states have call successors, (40) [2021-12-19 15:12:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2021-12-19 15:12:30,589 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 296 [2021-12-19 15:12:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:12:30,590 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2021-12-19 15:12:30,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-19 15:12:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2021-12-19 15:12:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-19 15:12:30,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:12:30,592 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:12:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-19 15:12:30,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-19 15:12:30,806 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:12:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:12:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1692424414, now seen corresponding path program 19 times [2021-12-19 15:12:30,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:12:30,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841380052] [2021-12-19 15:12:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:12:30,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:12:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:12:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:12:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-12-19 15:12:32,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:12:32,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841380052] [2021-12-19 15:12:32,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841380052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:32,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745826314] [2021-12-19 15:12:32,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:12:32,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:12:32,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:12:32,413 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:12:32,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-19 15:12:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-19 15:12:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:12:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-12-19 15:12:36,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:12:50,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745826314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:50,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:12:50,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 78 [2021-12-19 15:12:50,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793546585] [2021-12-19 15:12:50,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:12:50,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-19 15:12:50,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:12:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-19 15:12:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=6222, Unknown=0, NotChecked=0, Total=6480 [2021-12-19 15:12:50,167 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-19 15:12:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:12:55,368 INFO L93 Difference]: Finished difference Result 274 states and 297 transitions. [2021-12-19 15:12:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-19 15:12:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) Word has length 308 [2021-12-19 15:12:55,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:12:55,370 INFO L225 Difference]: With dead ends: 274 [2021-12-19 15:12:55,370 INFO L226 Difference]: Without dead ends: 271 [2021-12-19 15:12:55,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=768, Invalid=16002, Unknown=0, NotChecked=0, Total=16770 [2021-12-19 15:12:55,371 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 341 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 5702 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 5922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 5702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-19 15:12:55,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 4024 Invalid, 5922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 5702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-19 15:12:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-19 15:12:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-12-19 15:12:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 217 states have (on average 1.0737327188940091) internal successors, (233), 217 states have internal predecessors, (233), 18 states have call successors, (18), 11 states have call predecessors, (18), 34 states have return successors, (41), 41 states have call predecessors, (41), 17 states have call successors, (41) [2021-12-19 15:12:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2021-12-19 15:12:55,375 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 308 [2021-12-19 15:12:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:12:55,376 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2021-12-19 15:12:55,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-19 15:12:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2021-12-19 15:12:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-12-19 15:12:55,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:12:55,377 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:12:55,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-19 15:12:55,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:12:55,595 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:12:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:12:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1474768682, now seen corresponding path program 20 times [2021-12-19 15:12:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:12:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784428503] [2021-12-19 15:12:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:12:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:12:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:12:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:12:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:12:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:12:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 0 proven. 2064 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2021-12-19 15:12:57,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:12:57,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784428503] [2021-12-19 15:12:57,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784428503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:12:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791902735] [2021-12-19 15:12:57,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:12:57,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:12:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:12:57,577 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:12:57,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-19 15:12:58,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:12:58,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:12:58,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-19 15:12:58,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:13:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 0 proven. 2064 refuted. 0 times theorem prover too weak. 1977 trivial. 0 not checked. [2021-12-19 15:13:01,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:13:16,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791902735] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:13:16,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:13:16,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 81 [2021-12-19 15:13:16,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812588922] [2021-12-19 15:13:16,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:13:16,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-19 15:13:16,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:13:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-19 15:13:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6704, Unknown=0, NotChecked=0, Total=6972 [2021-12-19 15:13:16,061 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (6), 2 states have call predecessors, (6), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) [2021-12-19 15:13:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:13:20,851 INFO L93 Difference]: Finished difference Result 279 states and 302 transitions. [2021-12-19 15:13:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-19 15:13:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (6), 2 states have call predecessors, (6), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) Word has length 334 [2021-12-19 15:13:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:13:20,853 INFO L225 Difference]: With dead ends: 279 [2021-12-19 15:13:20,853 INFO L226 Difference]: Without dead ends: 276 [2021-12-19 15:13:20,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 342 SyntacticMatches, 23 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=799, Invalid=17291, Unknown=0, NotChecked=0, Total=18090 [2021-12-19 15:13:20,854 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 356 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 6302 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 6530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 6302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-19 15:13:20,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 4023 Invalid, 6530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 6302 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-19 15:13:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-19 15:13:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-12-19 15:13:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 221 states have (on average 1.0723981900452488) internal successors, (237), 221 states have internal predecessors, (237), 18 states have call successors, (18), 11 states have call predecessors, (18), 35 states have return successors, (42), 42 states have call predecessors, (42), 17 states have call successors, (42) [2021-12-19 15:13:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 297 transitions. [2021-12-19 15:13:20,858 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 297 transitions. Word has length 334 [2021-12-19 15:13:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:13:20,859 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 297 transitions. [2021-12-19 15:13:20,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (6), 2 states have call predecessors, (6), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) [2021-12-19 15:13:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 297 transitions. [2021-12-19 15:13:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-19 15:13:20,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:13:20,873 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:13:20,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-19 15:13:21,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-19 15:13:21,074 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:13:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:13:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 918147490, now seen corresponding path program 21 times [2021-12-19 15:13:21,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:13:21,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647205664] [2021-12-19 15:13:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:13:21,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:13:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:13:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:13:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:23,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-12-19 15:13:23,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:13:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647205664] [2021-12-19 15:13:23,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647205664] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:13:23,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650427288] [2021-12-19 15:13:23,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:13:23,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:13:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:13:23,376 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:13:23,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-19 15:13:25,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-12-19 15:13:25,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:13:25,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-19 15:13:25,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:13:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-12-19 15:13:28,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:13:43,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650427288] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:13:43,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:13:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 84 [2021-12-19 15:13:43,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407461660] [2021-12-19 15:13:43,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:13:43,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-12-19 15:13:43,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:13:43,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-12-19 15:13:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=7204, Unknown=0, NotChecked=0, Total=7482 [2021-12-19 15:13:43,058 INFO L87 Difference]: Start difference. First operand 275 states and 297 transitions. Second operand has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) [2021-12-19 15:13:49,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:13:49,152 INFO L93 Difference]: Finished difference Result 284 states and 307 transitions. [2021-12-19 15:13:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-19 15:13:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) Word has length 332 [2021-12-19 15:13:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:13:49,153 INFO L225 Difference]: With dead ends: 284 [2021-12-19 15:13:49,153 INFO L226 Difference]: Without dead ends: 281 [2021-12-19 15:13:49,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 336 SyntacticMatches, 24 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=830, Invalid=18630, Unknown=0, NotChecked=0, Total=19460 [2021-12-19 15:13:49,155 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 283 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 7236 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 7421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 7236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:13:49,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 5258 Invalid, 7421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 7236 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-19 15:13:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-12-19 15:13:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2021-12-19 15:13:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 225 states have (on average 1.0711111111111111) internal successors, (241), 225 states have internal predecessors, (241), 18 states have call successors, (18), 11 states have call predecessors, (18), 36 states have return successors, (43), 43 states have call predecessors, (43), 17 states have call successors, (43) [2021-12-19 15:13:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 302 transitions. [2021-12-19 15:13:49,159 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 302 transitions. Word has length 332 [2021-12-19 15:13:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:13:49,159 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 302 transitions. [2021-12-19 15:13:49,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) [2021-12-19 15:13:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 302 transitions. [2021-12-19 15:13:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-19 15:13:49,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:13:49,161 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:13:49,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-19 15:13:49,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:13:49,361 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:13:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:13:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1218085334, now seen corresponding path program 22 times [2021-12-19 15:13:49,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:13:49,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670851358] [2021-12-19 15:13:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:13:49,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:13:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:13:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:13:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:50,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:13:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-12-19 15:13:51,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:13:51,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670851358] [2021-12-19 15:13:51,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670851358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:13:51,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943827716] [2021-12-19 15:13:51,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:13:51,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:13:51,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:13:51,662 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:13:51,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-19 15:13:53,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:13:53,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:13:53,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-19 15:13:53,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:13:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-12-19 15:13:56,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:14:14,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943827716] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:14:14,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:14:14,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 87 [2021-12-19 15:14:14,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673953617] [2021-12-19 15:14:14,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:14:14,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-12-19 15:14:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:14:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-12-19 15:14:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=7722, Unknown=0, NotChecked=0, Total=8010 [2021-12-19 15:14:14,876 INFO L87 Difference]: Start difference. First operand 280 states and 302 transitions. Second operand has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) [2021-12-19 15:14:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:14:21,256 INFO L93 Difference]: Finished difference Result 289 states and 312 transitions. [2021-12-19 15:14:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-19 15:14:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) Word has length 344 [2021-12-19 15:14:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:14:21,258 INFO L225 Difference]: With dead ends: 289 [2021-12-19 15:14:21,258 INFO L226 Difference]: Without dead ends: 286 [2021-12-19 15:14:21,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 348 SyntacticMatches, 25 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=861, Invalid=20019, Unknown=0, NotChecked=0, Total=20880 [2021-12-19 15:14:21,259 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 294 mSDsluCounter, 4990 mSDsCounter, 0 mSdLazyCounter, 7264 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 5075 SdHoareTripleChecker+Invalid, 7456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 7264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:14:21,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 5075 Invalid, 7456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 7264 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-19 15:14:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-19 15:14:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2021-12-19 15:14:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 229 states have (on average 1.0698689956331877) internal successors, (245), 229 states have internal predecessors, (245), 18 states have call successors, (18), 11 states have call predecessors, (18), 37 states have return successors, (44), 44 states have call predecessors, (44), 17 states have call successors, (44) [2021-12-19 15:14:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 307 transitions. [2021-12-19 15:14:21,263 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 307 transitions. Word has length 344 [2021-12-19 15:14:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:14:21,264 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 307 transitions. [2021-12-19 15:14:21,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) [2021-12-19 15:14:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 307 transitions. [2021-12-19 15:14:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-12-19 15:14:21,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:14:21,266 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:14:21,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-19 15:14:21,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:14:21,487 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:14:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:14:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2104450082, now seen corresponding path program 23 times [2021-12-19 15:14:21,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:14:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128000003] [2021-12-19 15:14:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:14:21,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:14:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:14:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:14:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:14:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:14:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-12-19 15:14:23,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:14:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128000003] [2021-12-19 15:14:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128000003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:14:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912447283] [2021-12-19 15:14:23,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:14:23,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:14:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:14:23,899 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:14:23,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-19 15:14:25,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-12-19 15:14:25,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:14:25,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-19 15:14:25,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:14:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-12-19 15:14:29,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:14:52,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912447283] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:14:52,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:14:52,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 90 [2021-12-19 15:14:52,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519366241] [2021-12-19 15:14:52,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:14:52,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-12-19 15:14:52,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:14:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-12-19 15:14:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=8258, Unknown=0, NotChecked=0, Total=8556 [2021-12-19 15:14:52,894 INFO L87 Difference]: Start difference. First operand 285 states and 307 transitions. Second operand has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) [2021-12-19 15:14:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:14:59,675 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2021-12-19 15:14:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-19 15:14:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) Word has length 356 [2021-12-19 15:14:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:14:59,690 INFO L225 Difference]: With dead ends: 294 [2021-12-19 15:14:59,690 INFO L226 Difference]: Without dead ends: 291 [2021-12-19 15:14:59,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 360 SyntacticMatches, 26 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=892, Invalid=21458, Unknown=0, NotChecked=0, Total=22350 [2021-12-19 15:14:59,693 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 303 mSDsluCounter, 5458 mSDsCounter, 0 mSdLazyCounter, 8123 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 5544 SdHoareTripleChecker+Invalid, 8322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 8123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-19 15:14:59,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 5544 Invalid, 8322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 8123 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-19 15:14:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-19 15:14:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 290. [2021-12-19 15:14:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 233 states have (on average 1.0686695278969958) internal successors, (249), 233 states have internal predecessors, (249), 18 states have call successors, (18), 11 states have call predecessors, (18), 38 states have return successors, (45), 45 states have call predecessors, (45), 17 states have call successors, (45) [2021-12-19 15:14:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 312 transitions. [2021-12-19 15:14:59,710 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 312 transitions. Word has length 356 [2021-12-19 15:14:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:14:59,710 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 312 transitions. [2021-12-19 15:14:59,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) [2021-12-19 15:14:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 312 transitions. [2021-12-19 15:14:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-12-19 15:14:59,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:14:59,712 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:14:59,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-19 15:14:59,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-19 15:14:59,931 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:14:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:14:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2058380458, now seen corresponding path program 24 times [2021-12-19 15:14:59,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:14:59,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994036239] [2021-12-19 15:14:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:14:59,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:15:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:15:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:15:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 2286 refuted. 0 times theorem prover too weak. 2674 trivial. 0 not checked. [2021-12-19 15:15:02,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:15:02,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994036239] [2021-12-19 15:15:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994036239] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:15:02,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758697835] [2021-12-19 15:15:02,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:15:02,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:15:02,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:15:02,454 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:15:02,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-19 15:15:04,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2021-12-19 15:15:04,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:15:04,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-19 15:15:04,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:15:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 2286 refuted. 0 times theorem prover too weak. 2674 trivial. 0 not checked. [2021-12-19 15:15:08,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:15:29,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758697835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:15:29,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:15:29,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 93 [2021-12-19 15:15:29,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634835318] [2021-12-19 15:15:29,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:15:29,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 15:15:29,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:15:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 15:15:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=8812, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 15:15:29,758 INFO L87 Difference]: Start difference. First operand 290 states and 312 transitions. Second operand has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (5), 2 states have call predecessors, (5), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) [2021-12-19 15:15:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:15:36,223 INFO L93 Difference]: Finished difference Result 299 states and 322 transitions. [2021-12-19 15:15:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-19 15:15:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (5), 2 states have call predecessors, (5), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) Word has length 368 [2021-12-19 15:15:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:15:36,224 INFO L225 Difference]: With dead ends: 299 [2021-12-19 15:15:36,224 INFO L226 Difference]: Without dead ends: 296 [2021-12-19 15:15:36,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 372 SyntacticMatches, 27 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=923, Invalid=22947, Unknown=0, NotChecked=0, Total=23870 [2021-12-19 15:15:36,227 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 408 mSDsluCounter, 4431 mSDsCounter, 0 mSdLazyCounter, 8793 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 9058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 8793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-19 15:15:36,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 4518 Invalid, 9058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 8793 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-19 15:15:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-19 15:15:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-12-19 15:15:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 237 states have (on average 1.0675105485232068) internal successors, (253), 237 states have internal predecessors, (253), 18 states have call successors, (18), 11 states have call predecessors, (18), 39 states have return successors, (46), 46 states have call predecessors, (46), 17 states have call successors, (46) [2021-12-19 15:15:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 317 transitions. [2021-12-19 15:15:36,232 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 317 transitions. Word has length 368 [2021-12-19 15:15:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:15:36,232 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 317 transitions. [2021-12-19 15:15:36,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (5), 2 states have call predecessors, (5), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) [2021-12-19 15:15:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 317 transitions. [2021-12-19 15:15:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-19 15:15:36,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:15:36,234 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:15:36,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-19 15:15:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-19 15:15:36,439 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:15:36,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:15:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash 151537314, now seen corresponding path program 25 times [2021-12-19 15:15:36,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:15:36,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242663813] [2021-12-19 15:15:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:15:36,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:15:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:15:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:15:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:15:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-12-19 15:15:39,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:15:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242663813] [2021-12-19 15:15:39,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242663813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:15:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409436825] [2021-12-19 15:15:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:15:39,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:15:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:15:39,220 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:15:39,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-19 15:15:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:15:41,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-19 15:15:41,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:15:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-12-19 15:15:45,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:16:08,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409436825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:08,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:16:08,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 96 [2021-12-19 15:16:08,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361503835] [2021-12-19 15:16:08,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:16:08,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-12-19 15:16:08,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-12-19 15:16:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=9384, Unknown=0, NotChecked=0, Total=9702 [2021-12-19 15:16:08,708 INFO L87 Difference]: Start difference. First operand 295 states and 317 transitions. Second operand has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-19 15:16:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:16,697 INFO L93 Difference]: Finished difference Result 304 states and 327 transitions. [2021-12-19 15:16:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-19 15:16:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) Word has length 380 [2021-12-19 15:16:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:16,699 INFO L225 Difference]: With dead ends: 304 [2021-12-19 15:16:16,699 INFO L226 Difference]: Without dead ends: 301 [2021-12-19 15:16:16,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 384 SyntacticMatches, 28 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4736 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=954, Invalid=24486, Unknown=0, NotChecked=0, Total=25440 [2021-12-19 15:16:16,701 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 419 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 9248 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 9522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 9248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:16,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 4714 Invalid, 9522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 9248 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-19 15:16:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-19 15:16:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-12-19 15:16:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.066390041493776) internal successors, (257), 241 states have internal predecessors, (257), 18 states have call successors, (18), 11 states have call predecessors, (18), 40 states have return successors, (47), 47 states have call predecessors, (47), 17 states have call successors, (47) [2021-12-19 15:16:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 322 transitions. [2021-12-19 15:16:16,705 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 322 transitions. Word has length 380 [2021-12-19 15:16:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:16,705 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 322 transitions. [2021-12-19 15:16:16,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-19 15:16:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 322 transitions. [2021-12-19 15:16:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-12-19 15:16:16,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:16,708 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:16,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-19 15:16:16,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-19 15:16:16,927 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash 702258518, now seen corresponding path program 26 times [2021-12-19 15:16:16,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744148700] [2021-12-19 15:16:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:16,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:16:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:16:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:16:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 0 proven. 3027 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2021-12-19 15:16:20,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744148700] [2021-12-19 15:16:20,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744148700] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549822119] [2021-12-19 15:16:20,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:16:20,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:20,066 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:16:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-19 15:16:22,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:16:22,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:16:22,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 130 conjunts are in the unsatisfiable core [2021-12-19 15:16:22,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:16:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 0 proven. 3027 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2021-12-19 15:16:26,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:16:55,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549822119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:55,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:16:55,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 99 [2021-12-19 15:16:55,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688804010] [2021-12-19 15:16:55,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:16:55,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-12-19 15:16:55,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-12-19 15:16:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=9974, Unknown=0, NotChecked=0, Total=10302 [2021-12-19 15:16:55,669 INFO L87 Difference]: Start difference. First operand 300 states and 322 transitions. Second operand has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (6), 2 states have call predecessors, (6), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) [2021-12-19 15:17:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:17:04,581 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2021-12-19 15:17:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-19 15:17:04,582 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (6), 2 states have call predecessors, (6), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) Word has length 406 [2021-12-19 15:17:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:17:04,583 INFO L225 Difference]: With dead ends: 309 [2021-12-19 15:17:04,583 INFO L226 Difference]: Without dead ends: 306 [2021-12-19 15:17:04,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 414 SyntacticMatches, 29 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=985, Invalid=26075, Unknown=0, NotChecked=0, Total=27060 [2021-12-19 15:17:04,585 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 334 mSDsluCounter, 6260 mSDsCounter, 0 mSdLazyCounter, 10074 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 10293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 10074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-19 15:17:04,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6349 Invalid, 10293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 10074 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-19 15:17:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-19 15:17:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2021-12-19 15:17:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 245 states have (on average 1.0653061224489795) internal successors, (261), 245 states have internal predecessors, (261), 18 states have call successors, (18), 11 states have call predecessors, (18), 41 states have return successors, (48), 48 states have call predecessors, (48), 17 states have call successors, (48) [2021-12-19 15:17:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 327 transitions. [2021-12-19 15:17:04,604 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 327 transitions. Word has length 406 [2021-12-19 15:17:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:17:04,604 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 327 transitions. [2021-12-19 15:17:04,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (6), 2 states have call predecessors, (6), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) [2021-12-19 15:17:04,605 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 327 transitions. [2021-12-19 15:17:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-19 15:17:04,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:17:04,607 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:17:04,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-12-19 15:17:04,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:17:04,831 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:17:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:17:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1498190114, now seen corresponding path program 27 times [2021-12-19 15:17:04,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:17:04,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618852604] [2021-12-19 15:17:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:17:04,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:17:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:17:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:17:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:17:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:17:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6049 backedges. 0 proven. 2763 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2021-12-19 15:17:08,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:17:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618852604] [2021-12-19 15:17:08,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618852604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:17:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770195401] [2021-12-19 15:17:08,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:17:08,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:17:08,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:17:08,163 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:17:08,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-19 15:17:10,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-12-19 15:17:10,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:17:10,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 130 conjunts are in the unsatisfiable core [2021-12-19 15:17:10,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:17:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6049 backedges. 0 proven. 2763 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2021-12-19 15:17:15,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:18:20,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770195401] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:18:20,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:18:20,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 102 [2021-12-19 15:18:20,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028264785] [2021-12-19 15:18:20,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:18:20,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-12-19 15:18:20,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:18:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-12-19 15:18:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=11049, Unknown=0, NotChecked=0, Total=11556 [2021-12-19 15:18:20,057 INFO L87 Difference]: Start difference. First operand 305 states and 327 transitions. Second operand has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (5), 2 states have call predecessors, (5), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) [2021-12-19 15:18:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:18:29,843 INFO L93 Difference]: Finished difference Result 314 states and 337 transitions. [2021-12-19 15:18:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-19 15:18:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (5), 2 states have call predecessors, (5), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) Word has length 404 [2021-12-19 15:18:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:18:29,845 INFO L225 Difference]: With dead ends: 314 [2021-12-19 15:18:29,845 INFO L226 Difference]: Without dead ends: 311 [2021-12-19 15:18:29,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 411 SyntacticMatches, 30 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5665 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1314, Invalid=28442, Unknown=0, NotChecked=0, Total=29756 [2021-12-19 15:18:29,847 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 447 mSDsluCounter, 5727 mSDsCounter, 0 mSdLazyCounter, 11000 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 5817 SdHoareTripleChecker+Invalid, 11292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 11000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-19 15:18:29,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 5817 Invalid, 11292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 11000 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-19 15:18:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-12-19 15:18:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2021-12-19 15:18:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 249 states have (on average 1.0642570281124497) internal successors, (265), 249 states have internal predecessors, (265), 18 states have call successors, (18), 11 states have call predecessors, (18), 42 states have return successors, (49), 49 states have call predecessors, (49), 17 states have call successors, (49) [2021-12-19 15:18:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 332 transitions. [2021-12-19 15:18:29,868 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 332 transitions. Word has length 404 [2021-12-19 15:18:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:18:29,868 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 332 transitions. [2021-12-19 15:18:29,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (5), 2 states have call predecessors, (5), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) [2021-12-19 15:18:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 332 transitions. [2021-12-19 15:18:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-12-19 15:18:29,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:18:29,871 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:18:29,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-19 15:18:30,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-19 15:18:30,071 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:18:30,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:18:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash -133138730, now seen corresponding path program 28 times [2021-12-19 15:18:30,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:18:30,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289413918] [2021-12-19 15:18:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:18:30,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:18:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:18:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:18:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:18:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:18:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6913 backedges. 0 proven. 3388 refuted. 0 times theorem prover too weak. 3525 trivial. 0 not checked. [2021-12-19 15:18:33,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:18:33,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289413918] [2021-12-19 15:18:33,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289413918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:18:33,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477600046] [2021-12-19 15:18:33,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:18:33,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:18:33,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:18:33,426 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:18:33,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-19 15:18:36,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:18:36,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:18:36,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-19 15:18:36,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:18:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6913 backedges. 0 proven. 3388 refuted. 0 times theorem prover too weak. 3525 trivial. 0 not checked. [2021-12-19 15:18:41,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:19:19,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477600046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:19:19,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:19:19,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 105 [2021-12-19 15:19:19,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631608726] [2021-12-19 15:19:19,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:19:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-12-19 15:19:19,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:19:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-12-19 15:19:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=11208, Unknown=0, NotChecked=0, Total=11556 [2021-12-19 15:19:19,466 INFO L87 Difference]: Start difference. First operand 310 states and 332 transitions. Second operand has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (6), 2 states have call predecessors, (6), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) [2021-12-19 15:19:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:19:29,176 INFO L93 Difference]: Finished difference Result 319 states and 342 transitions. [2021-12-19 15:19:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-19 15:19:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (6), 2 states have call predecessors, (6), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) Word has length 430 [2021-12-19 15:19:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:19:29,177 INFO L225 Difference]: With dead ends: 319 [2021-12-19 15:19:29,177 INFO L226 Difference]: Without dead ends: 316 [2021-12-19 15:19:29,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 438 SyntacticMatches, 31 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5705 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1047, Invalid=29403, Unknown=0, NotChecked=0, Total=30450 [2021-12-19 15:19:29,183 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 353 mSDsluCounter, 7421 mSDsCounter, 0 mSdLazyCounter, 11181 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 7512 SdHoareTripleChecker+Invalid, 11414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 11181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:19:29,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 7512 Invalid, 11414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 11181 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-19 15:19:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-19 15:19:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-19 15:19:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 253 states have (on average 1.0632411067193677) internal successors, (269), 253 states have internal predecessors, (269), 18 states have call successors, (18), 11 states have call predecessors, (18), 43 states have return successors, (50), 50 states have call predecessors, (50), 17 states have call successors, (50) [2021-12-19 15:19:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 337 transitions. [2021-12-19 15:19:29,195 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 337 transitions. Word has length 430 [2021-12-19 15:19:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:19:29,196 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 337 transitions. [2021-12-19 15:19:29,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (6), 2 states have call predecessors, (6), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) [2021-12-19 15:19:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 337 transitions. [2021-12-19 15:19:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-19 15:19:29,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:19:29,213 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:19:29,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-12-19 15:19:29,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-19 15:19:29,427 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:19:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:19:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1409563554, now seen corresponding path program 29 times [2021-12-19 15:19:29,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:19:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454999399] [2021-12-19 15:19:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:19:29,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:19:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:19:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:19:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:19:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:19:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6835 backedges. 0 proven. 3106 refuted. 0 times theorem prover too weak. 3729 trivial. 0 not checked. [2021-12-19 15:19:32,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:19:32,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454999399] [2021-12-19 15:19:32,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454999399] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:19:32,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608957451] [2021-12-19 15:19:32,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 15:19:32,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:19:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:19:32,822 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:19:32,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-19 15:19:36,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-12-19 15:19:36,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:19:36,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-19 15:19:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:19:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6835 backedges. 0 proven. 3106 refuted. 0 times theorem prover too weak. 3729 trivial. 0 not checked. [2021-12-19 15:19:40,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:20:14,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608957451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:20:14,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:20:14,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 108 [2021-12-19 15:20:14,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695024181] [2021-12-19 15:20:14,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:20:14,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-12-19 15:20:14,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:20:14,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-12-19 15:20:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=11852, Unknown=0, NotChecked=0, Total=12210 [2021-12-19 15:20:14,915 INFO L87 Difference]: Start difference. First operand 315 states and 337 transitions. Second operand has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) [2021-12-19 15:20:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:20:24,218 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2021-12-19 15:20:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-12-19 15:20:24,219 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) Word has length 428 [2021-12-19 15:20:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:20:24,220 INFO L225 Difference]: With dead ends: 324 [2021-12-19 15:20:24,220 INFO L226 Difference]: Without dead ends: 321 [2021-12-19 15:20:24,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 432 SyntacticMatches, 32 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6048 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1078, Invalid=31142, Unknown=0, NotChecked=0, Total=32220 [2021-12-19 15:20:24,222 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 471 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 12104 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 12414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 12104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:20:24,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 5594 Invalid, 12414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 12104 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-19 15:20:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-19 15:20:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-12-19 15:20:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 257 states have (on average 1.0622568093385214) internal successors, (273), 257 states have internal predecessors, (273), 18 states have call successors, (18), 11 states have call predecessors, (18), 44 states have return successors, (51), 51 states have call predecessors, (51), 17 states have call successors, (51) [2021-12-19 15:20:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 342 transitions. [2021-12-19 15:20:24,226 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 342 transitions. Word has length 428 [2021-12-19 15:20:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:20:24,226 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 342 transitions. [2021-12-19 15:20:24,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) [2021-12-19 15:20:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 342 transitions. [2021-12-19 15:20:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-12-19 15:20:24,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:20:24,229 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 35, 35, 35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:20:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-12-19 15:20:24,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:20:24,451 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:20:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:20:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -9310122, now seen corresponding path program 30 times [2021-12-19 15:20:24,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:20:24,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134944680] [2021-12-19 15:20:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:20:24,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:20:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:20:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-19 15:20:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:20:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:20:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7751 backedges. 0 proven. 3769 refuted. 0 times theorem prover too weak. 3982 trivial. 0 not checked. [2021-12-19 15:20:28,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:20:28,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134944680] [2021-12-19 15:20:28,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134944680] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:20:28,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709798359] [2021-12-19 15:20:28,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 15:20:28,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:20:28,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:20:28,131 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:20:28,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-19 15:20:31,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2021-12-19 15:20:31,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:20:31,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 146 conjunts are in the unsatisfiable core [2021-12-19 15:20:31,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:20:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7751 backedges. 0 proven. 3769 refuted. 0 times theorem prover too weak. 3982 trivial. 0 not checked. [2021-12-19 15:20:37,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:21:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709798359] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:21:09,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:21:09,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 111 [2021-12-19 15:21:09,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731744548] [2021-12-19 15:21:09,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:21:09,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-12-19 15:21:09,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:21:09,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-12-19 15:21:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=12514, Unknown=0, NotChecked=0, Total=12882 [2021-12-19 15:21:09,563 INFO L87 Difference]: Start difference. First operand 320 states and 342 transitions. Second operand has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (6), 2 states have call predecessors, (6), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) [2021-12-19 15:21:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:21:20,085 INFO L93 Difference]: Finished difference Result 329 states and 352 transitions. [2021-12-19 15:21:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-19 15:21:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (6), 2 states have call predecessors, (6), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) Word has length 454 [2021-12-19 15:21:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:21:20,087 INFO L225 Difference]: With dead ends: 329 [2021-12-19 15:21:20,087 INFO L226 Difference]: Without dead ends: 326 [2021-12-19 15:21:20,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 462 SyntacticMatches, 33 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6401 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1109, Invalid=32931, Unknown=0, NotChecked=0, Total=34040 [2021-12-19 15:21:20,090 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 485 mSDsluCounter, 6592 mSDsCounter, 0 mSdLazyCounter, 13290 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 6685 SdHoareTripleChecker+Invalid, 13608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 13290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-19 15:21:20,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 6685 Invalid, 13608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 13290 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-19 15:21:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-19 15:21:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2021-12-19 15:21:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 261 states have (on average 1.0613026819923372) internal successors, (277), 261 states have internal predecessors, (277), 18 states have call successors, (18), 11 states have call predecessors, (18), 45 states have return successors, (52), 52 states have call predecessors, (52), 17 states have call successors, (52) [2021-12-19 15:21:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 347 transitions. [2021-12-19 15:21:20,096 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 347 transitions. Word has length 454 [2021-12-19 15:21:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:21:20,096 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 347 transitions. [2021-12-19 15:21:20,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (6), 2 states have call predecessors, (6), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) [2021-12-19 15:21:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 347 transitions. [2021-12-19 15:21:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-12-19 15:21:20,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:21:20,099 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:21:20,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-19 15:21:20,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-12-19 15:21:20,323 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:21:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:21:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -990427614, now seen corresponding path program 31 times [2021-12-19 15:21:20,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:21:20,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047482058] [2021-12-19 15:21:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:21:20,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:21:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-19 15:21:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:21:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-19 15:21:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7669 backedges. 0 proven. 3469 refuted. 0 times theorem prover too weak. 4200 trivial. 0 not checked. [2021-12-19 15:21:24,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:21:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047482058] [2021-12-19 15:21:24,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047482058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:21:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327649099] [2021-12-19 15:21:24,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 15:21:24,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:21:24,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:21:24,319 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:21:24,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-19 15:21:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:21:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 146 conjunts are in the unsatisfiable core [2021-12-19 15:21:28,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:21:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7669 backedges. 0 proven. 3469 refuted. 0 times theorem prover too weak. 4200 trivial. 0 not checked. [2021-12-19 15:21:33,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15