./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/recHanoi02-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/recHanoi02-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc483b08189ee3c98902d05e6dbaf5e8d67294309bb86f0f1cb0c68cd8f4471f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:27:53,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:27:53,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:27:53,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:27:53,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:27:53,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:27:53,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:27:53,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:27:53,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:27:53,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:27:53,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:27:53,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:27:53,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:27:53,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:27:53,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:27:53,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:27:53,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:27:53,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:27:53,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:27:53,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:27:53,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:27:53,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:27:53,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:27:53,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:27:53,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:27:53,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:27:53,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:27:53,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:27:53,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:27:53,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:27:53,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:27:53,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:27:53,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:27:53,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:27:53,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:27:53,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:27:53,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:27:53,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:27:53,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:27:53,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:27:53,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:27:53,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-22 19:27:53,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:27:53,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:27:53,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:27:53,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:27:53,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:27:53,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:27:53,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:27:53,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:27:53,340 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:27:53,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:27:53,341 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:27:53,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:27:53,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:27:53,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:27:53,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:27:53,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:27:53,342 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:27:53,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:27:53,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:27:53,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:27:53,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:27:53,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:27:53,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:27:53,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:27:53,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:27:53,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:27:53,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:27:53,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:27:53,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:27:53,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:27:53,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:27:53,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc483b08189ee3c98902d05e6dbaf5e8d67294309bb86f0f1cb0c68cd8f4471f [2021-12-22 19:27:53,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:27:53,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:27:53,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:27:53,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:27:53,600 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:27:53,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2021-12-22 19:27:53,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7555f0582/7b495caf217f4dbfa8786ceaf189fe87/FLAG3a44f5ab3 [2021-12-22 19:27:54,021 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:27:54,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2021-12-22 19:27:54,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7555f0582/7b495caf217f4dbfa8786ceaf189fe87/FLAG3a44f5ab3 [2021-12-22 19:27:54,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7555f0582/7b495caf217f4dbfa8786ceaf189fe87 [2021-12-22 19:27:54,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:27:54,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:27:54,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:27:54,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:27:54,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:27:54,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ead70a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54, skipping insertion in model container [2021-12-22 19:27:54,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:27:54,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:27:54,199 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/termination-numeric/recHanoi02-1.c[769,782] [2021-12-22 19:27:54,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:27:54,204 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:27:54,215 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/termination-numeric/recHanoi02-1.c[769,782] [2021-12-22 19:27:54,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:27:54,228 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:27:54,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54 WrapperNode [2021-12-22 19:27:54,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:27:54,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:27:54,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:27:54,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:27:54,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,249 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-22 19:27:54,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:27:54,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:27:54,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:27:54,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:27:54,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:27:54,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:27:54,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:27:54,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:27:54,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (1/1) ... [2021-12-22 19:27:54,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:27:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:54,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 19:27:54,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 19:27:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 19:27:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-12-22 19:27:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-12-22 19:27:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:27:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:27:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 19:27:54,369 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:27:54,370 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:27:54,451 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:27:54,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:27:54,456 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 19:27:54,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:27:54 BoogieIcfgContainer [2021-12-22 19:27:54,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:27:54,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:27:54,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:27:54,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:27:54,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:27:54" (1/3) ... [2021-12-22 19:27:54,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf8c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:27:54, skipping insertion in model container [2021-12-22 19:27:54,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:54" (2/3) ... [2021-12-22 19:27:54,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf8c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:27:54, skipping insertion in model container [2021-12-22 19:27:54,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:27:54" (3/3) ... [2021-12-22 19:27:54,463 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-1.c [2021-12-22 19:27:54,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:27:54,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-22 19:27:54,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:27:54,505 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 19:27:54,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-22 19:27:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 19:27:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 19:27:54,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:54,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:54,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:54,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1325924785, now seen corresponding path program 1 times [2021-12-22 19:27:54,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026260878] [2021-12-22 19:27:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:54,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:54,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:54,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026260878] [2021-12-22 19:27:54,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026260878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:27:54,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:27:54,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:27:54,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870911167] [2021-12-22 19:27:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:27:54,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 19:27:54,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 19:27:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:27:54,736 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:54,831 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-12-22 19:27:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:27:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 19:27:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:54,842 INFO L225 Difference]: With dead ends: 34 [2021-12-22 19:27:54,842 INFO L226 Difference]: Without dead ends: 21 [2021-12-22 19:27:54,844 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 [2021-12-22 19:27:54,847 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:54,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:27:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-22 19:27:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-22 19:27:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:27:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-12-22 19:27:54,875 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2021-12-22 19:27:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:54,876 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-12-22 19:27:54,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-12-22 19:27:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:27:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:54,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:54,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:27:54,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1846004663, now seen corresponding path program 1 times [2021-12-22 19:27:54,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243208775] [2021-12-22 19:27:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:54,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:54,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:54,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243208775] [2021-12-22 19:27:54,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243208775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:27:54,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:27:54,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:27:54,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106530334] [2021-12-22 19:27:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:27:54,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 19:27:54,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 19:27:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:27:54,920 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:54,954 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-12-22 19:27:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:27:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 19:27:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:54,957 INFO L225 Difference]: With dead ends: 40 [2021-12-22 19:27:54,957 INFO L226 Difference]: Without dead ends: 37 [2021-12-22 19:27:54,958 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 [2021-12-22 19:27:54,959 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:54,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:27:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-22 19:27:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-12-22 19:27:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 19:27:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-22 19:27:54,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2021-12-22 19:27:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:54,968 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-22 19:27:54,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-22 19:27:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 19:27:54,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:54,969 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:54,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 19:27:54,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash -498171083, now seen corresponding path program 1 times [2021-12-22 19:27:54,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:54,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032305709] [2021-12-22 19:27:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:54,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:55,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032305709] [2021-12-22 19:27:55,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032305709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317091194] [2021-12-22 19:27:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:55,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:55,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:55,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:27:55,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:27:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:55,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:27:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:55,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317091194] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:55,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-22 19:27:55,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911175991] [2021-12-22 19:27:55,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:55,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 19:27:55,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:27:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:27:55,322 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:55,510 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-12-22 19:27:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 19:27:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 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 13 [2021-12-22 19:27:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:55,516 INFO L225 Difference]: With dead ends: 92 [2021-12-22 19:27:55,516 INFO L226 Difference]: Without dead ends: 91 [2021-12-22 19:27:55,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-12-22 19:27:55,521 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 164 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:55,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 145 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:27:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-22 19:27:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2021-12-22 19:27:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 56 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-22 19:27:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-12-22 19:27:55,536 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 13 [2021-12-22 19:27:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:55,536 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-12-22 19:27:55,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-12-22 19:27:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 19:27:55,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:55,537 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:55,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:55,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:55,756 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2001544150, now seen corresponding path program 1 times [2021-12-22 19:27:55,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:55,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823704618] [2021-12-22 19:27:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:55,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:27:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 19:27:55,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:55,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823704618] [2021-12-22 19:27:55,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823704618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:27:55,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:27:55,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:27:55,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070489594] [2021-12-22 19:27:55,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:27:55,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:27:55,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:55,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:27:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:27:55,824 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:27:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:55,847 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2021-12-22 19:27:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:27:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 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 15 [2021-12-22 19:27:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:55,849 INFO L225 Difference]: With dead ends: 104 [2021-12-22 19:27:55,850 INFO L226 Difference]: Without dead ends: 93 [2021-12-22 19:27:55,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:27:55,851 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:27:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-22 19:27:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-22 19:27:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 78 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-22 19:27:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-12-22 19:27:55,864 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 15 [2021-12-22 19:27:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:55,864 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-12-22 19:27:55,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:27:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-12-22 19:27:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 19:27:55,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:55,866 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-12-22 19:27:55,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 19:27:55,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1663195447, now seen corresponding path program 2 times [2021-12-22 19:27:55,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242139576] [2021-12-22 19:27:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:55,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:55,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:55,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242139576] [2021-12-22 19:27:55,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242139576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046295971] [2021-12-22 19:27:55,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:27:55,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:55,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:27:55,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:27:56,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:27:56,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:27:56,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 19:27:56,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:56,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:56,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046295971] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:56,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:56,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-22 19:27:56,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846183917] [2021-12-22 19:27:56,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:56,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 19:27:56,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:56,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 19:27:56,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:27:56,376 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:56,770 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2021-12-22 19:27:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-22 19:27:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 19:27:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:56,776 INFO L225 Difference]: With dead ends: 248 [2021-12-22 19:27:56,777 INFO L226 Difference]: Without dead ends: 247 [2021-12-22 19:27:56,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=1207, Unknown=0, NotChecked=0, Total=1722 [2021-12-22 19:27:56,780 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 529 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:56,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 285 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:27:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-22 19:27:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 207. [2021-12-22 19:27:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 174 states have internal predecessors, (224), 12 states have call successors, (12), 11 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 11 states have call successors, (21) [2021-12-22 19:27:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2021-12-22 19:27:56,811 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 28 [2021-12-22 19:27:56,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:56,811 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2021-12-22 19:27:56,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:27:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2021-12-22 19:27:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 19:27:56,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:56,812 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:56,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:57,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:57,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash 907320634, now seen corresponding path program 1 times [2021-12-22 19:27:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:57,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023566158] [2021-12-22 19:27:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:57,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:27:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:27:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:27:57,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:57,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023566158] [2021-12-22 19:27:57,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023566158] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:57,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570140107] [2021-12-22 19:27:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:57,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:57,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:57,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:27:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 19:27:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:27:57,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:27:57,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:27:57,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570140107] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:57,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:57,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-12-22 19:27:57,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613596267] [2021-12-22 19:27:57,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:57,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 19:27:57,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:27:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:27:57,342 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-22 19:27:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:57,400 INFO L93 Difference]: Finished difference Result 400 states and 549 transitions. [2021-12-22 19:27:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 19:27:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2021-12-22 19:27:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:57,406 INFO L225 Difference]: With dead ends: 400 [2021-12-22 19:27:57,406 INFO L226 Difference]: Without dead ends: 398 [2021-12-22 19:27:57,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:27:57,408 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:57,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:27:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-22 19:27:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 377. [2021-12-22 19:27:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 315 states have (on average 1.253968253968254) internal successors, (395), 314 states have internal predecessors, (395), 12 states have call successors, (12), 11 states have call predecessors, (12), 46 states have return successors, (51), 51 states have call predecessors, (51), 11 states have call successors, (51) [2021-12-22 19:27:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2021-12-22 19:27:57,433 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 27 [2021-12-22 19:27:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:57,434 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2021-12-22 19:27:57,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-22 19:27:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2021-12-22 19:27:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 19:27:57,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:57,435 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:27:57,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:57,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:57,651 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1937831374, now seen corresponding path program 1 times [2021-12-22 19:27:57,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211124406] [2021-12-22 19:27:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:57,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:27:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:27:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:27:57,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:57,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211124406] [2021-12-22 19:27:57,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211124406] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:57,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528844927] [2021-12-22 19:27:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:57,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:57,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:27:57,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 19:27:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:57,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:27:57,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:27:57,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:27:57,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528844927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:27:57,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 19:27:57,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-22 19:27:57,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324318863] [2021-12-22 19:27:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:27:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:27:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:27:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:27:57,822 INFO L87 Difference]: Start difference. First operand 377 states and 458 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 19:27:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:27:57,844 INFO L93 Difference]: Finished difference Result 377 states and 458 transitions. [2021-12-22 19:27:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:27:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-12-22 19:27:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:27:57,847 INFO L225 Difference]: With dead ends: 377 [2021-12-22 19:27:57,847 INFO L226 Difference]: Without dead ends: 333 [2021-12-22 19:27:57,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:27:57,848 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:27:57,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:27:57,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-22 19:27:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-22 19:27:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 279 states have (on average 1.060931899641577) internal successors, (296), 276 states have internal predecessors, (296), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2021-12-22 19:27:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 353 transitions. [2021-12-22 19:27:57,864 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 353 transitions. Word has length 28 [2021-12-22 19:27:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:27:57,864 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 353 transitions. [2021-12-22 19:27:57,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 19:27:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 353 transitions. [2021-12-22 19:27:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 19:27:57,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:27:57,866 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-12-22 19:27:57,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:27:58,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:58,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:27:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:27:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748105, now seen corresponding path program 3 times [2021-12-22 19:27:58,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:27:58,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819839003] [2021-12-22 19:27:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:27:58,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:27:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:27:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:58,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:27:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819839003] [2021-12-22 19:27:58,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819839003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:27:58,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486350773] [2021-12-22 19:27:58,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:27:58,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:27:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:27:58,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:27:58,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 19:27:58,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-22 19:27:58,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:27:58,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 19:27:58,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:27:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:58,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:27:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:27:59,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486350773] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:27:59,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:27:59,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-22 19:27:59,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272889432] [2021-12-22 19:27:59,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:27:59,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-22 19:27:59,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:27:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-22 19:27:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:27:59,121 INFO L87 Difference]: Start difference. First operand 333 states and 353 transitions. Second operand has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:00,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:28:00,121 INFO L93 Difference]: Finished difference Result 800 states and 833 transitions. [2021-12-22 19:28:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-22 19:28:00,122 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-22 19:28:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:28:00,125 INFO L225 Difference]: With dead ends: 800 [2021-12-22 19:28:00,125 INFO L226 Difference]: Without dead ends: 799 [2021-12-22 19:28:00,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2204, Invalid=5278, Unknown=0, NotChecked=0, Total=7482 [2021-12-22 19:28:00,129 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1049 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 19:28:00,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 437 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 19:28:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-12-22 19:28:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 777. [2021-12-22 19:28:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 651 states have (on average 1.0629800307219661) internal successors, (692), 648 states have internal predecessors, (692), 24 states have call successors, (24), 23 states have call predecessors, (24), 100 states have return successors, (105), 105 states have call predecessors, (105), 23 states have call successors, (105) [2021-12-22 19:28:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 821 transitions. [2021-12-22 19:28:00,151 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 821 transitions. Word has length 58 [2021-12-22 19:28:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:28:00,151 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 821 transitions. [2021-12-22 19:28:00,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 26 states have internal predecessors, (92), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 821 transitions. [2021-12-22 19:28:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 19:28:00,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:28:00,154 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-22 19:28:00,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:28:00,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:00,376 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:28:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:28:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1496867286, now seen corresponding path program 2 times [2021-12-22 19:28:00,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:28:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634390483] [2021-12-22 19:28:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:28:00,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:28:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:28:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-22 19:28:00,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:28:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634390483] [2021-12-22 19:28:00,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634390483] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:28:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947922986] [2021-12-22 19:28:00,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:28:00,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:28:00,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:28:00,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 19:28:00,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:28:00,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:28:00,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 19:28:00,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:28:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-22 19:28:00,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:28:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-22 19:28:01,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947922986] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:28:01,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:28:01,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2021-12-22 19:28:01,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651058422] [2021-12-22 19:28:01,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:28:01,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 19:28:01,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:28:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 19:28:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:28:01,285 INFO L87 Difference]: Start difference. First operand 777 states and 821 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-22 19:28:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:28:01,365 INFO L93 Difference]: Finished difference Result 1714 states and 1895 transitions. [2021-12-22 19:28:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 19:28:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 63 [2021-12-22 19:28:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:28:01,371 INFO L225 Difference]: With dead ends: 1714 [2021-12-22 19:28:01,371 INFO L226 Difference]: Without dead ends: 1416 [2021-12-22 19:28:01,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:28:01,375 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:28:01,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:28:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-12-22 19:28:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1416. [2021-12-22 19:28:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1203 states have (on average 1.029093931837074) internal successors, (1238), 1194 states have internal predecessors, (1238), 24 states have call successors, (24), 23 states have call predecessors, (24), 187 states have return successors, (198), 198 states have call predecessors, (198), 23 states have call successors, (198) [2021-12-22 19:28:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1460 transitions. [2021-12-22 19:28:01,431 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1460 transitions. Word has length 63 [2021-12-22 19:28:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:28:01,432 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 1460 transitions. [2021-12-22 19:28:01,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-22 19:28:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1460 transitions. [2021-12-22 19:28:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 19:28:01,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:28:01,439 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2021-12-22 19:28:01,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:28:01,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:01,662 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:28:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:28:01,663 INFO L85 PathProgramCache]: Analyzing trace with hash 255962615, now seen corresponding path program 4 times [2021-12-22 19:28:01,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:28:01,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498008571] [2021-12-22 19:28:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:28:01,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:28:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:02,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:28:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498008571] [2021-12-22 19:28:02,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498008571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:28:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832073343] [2021-12-22 19:28:02,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:28:02,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:28:02,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:28:02,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 19:28:02,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:28:02,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:28:02,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-22 19:28:02,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:28:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:02,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:28:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:04,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832073343] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:28:04,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:28:04,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-22 19:28:04,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482317503] [2021-12-22 19:28:04,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:28:04,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-22 19:28:04,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:28:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-22 19:28:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2021-12-22 19:28:04,575 INFO L87 Difference]: Start difference. First operand 1416 states and 1460 transitions. Second operand has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:28:07,700 INFO L93 Difference]: Finished difference Result 3359 states and 3428 transitions. [2021-12-22 19:28:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-12-22 19:28:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-22 19:28:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:28:07,711 INFO L225 Difference]: With dead ends: 3359 [2021-12-22 19:28:07,711 INFO L226 Difference]: Without dead ends: 3358 [2021-12-22 19:28:07,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9119, Invalid=22033, Unknown=0, NotChecked=0, Total=31152 [2021-12-22 19:28:07,719 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 3331 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 19:28:07,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 1063 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 19:28:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-12-22 19:28:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3312. [2021-12-22 19:28:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 2811 states have (on average 1.0295268587691213) internal successors, (2894), 2802 states have internal predecessors, (2894), 48 states have call successors, (48), 47 states have call predecessors, (48), 451 states have return successors, (462), 462 states have call predecessors, (462), 47 states have call successors, (462) [2021-12-22 19:28:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 3404 transitions. [2021-12-22 19:28:07,783 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 3404 transitions. Word has length 118 [2021-12-22 19:28:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:28:07,785 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 3404 transitions. [2021-12-22 19:28:07,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.021505376344086) internal successors, (188), 50 states have internal predecessors, (188), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 3404 transitions. [2021-12-22 19:28:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 19:28:07,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:28:07,792 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-22 19:28:07,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:28:08,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:08,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:28:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:28:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1973780778, now seen corresponding path program 3 times [2021-12-22 19:28:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:28:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440807356] [2021-12-22 19:28:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:28:08,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:28:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:28:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-22 19:28:08,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:28:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440807356] [2021-12-22 19:28:08,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440807356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:28:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372396905] [2021-12-22 19:28:08,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:28:08,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:28:08,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:28:08,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 19:28:08,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-22 19:28:08,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:28:08,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 19:28:08,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:28:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-22 19:28:08,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:28:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-12-22 19:28:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372396905] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:28:12,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:28:12,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2021-12-22 19:28:12,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808855051] [2021-12-22 19:28:12,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:28:12,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-22 19:28:12,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:28:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-22 19:28:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:28:12,330 INFO L87 Difference]: Start difference. First operand 3312 states and 3404 transitions. Second operand has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-22 19:28:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:28:12,525 INFO L93 Difference]: Finished difference Result 7201 states and 7856 transitions. [2021-12-22 19:28:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-22 19:28:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2021-12-22 19:28:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:28:12,547 INFO L225 Difference]: With dead ends: 7201 [2021-12-22 19:28:12,548 INFO L226 Difference]: Without dead ends: 5850 [2021-12-22 19:28:12,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 257 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:28:12,554 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:28:12,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 110 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:28:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2021-12-22 19:28:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5850. [2021-12-22 19:28:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5850 states, 4995 states have (on average 1.0142142142142143) internal successors, (5066), 4974 states have internal predecessors, (5066), 48 states have call successors, (48), 47 states have call predecessors, (48), 805 states have return successors, (828), 828 states have call predecessors, (828), 47 states have call successors, (828) [2021-12-22 19:28:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 5942 transitions. [2021-12-22 19:28:12,664 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 5942 transitions. Word has length 135 [2021-12-22 19:28:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:28:12,664 INFO L470 AbstractCegarLoop]: Abstraction has 5850 states and 5942 transitions. [2021-12-22 19:28:12,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-22 19:28:12,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 5942 transitions. [2021-12-22 19:28:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-22 19:28:12,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:28:12,670 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2021-12-22 19:28:12,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:28:12,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-22 19:28:12,884 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:28:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:28:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1181417737, now seen corresponding path program 5 times [2021-12-22 19:28:12,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:28:12,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87381500] [2021-12-22 19:28:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:28:12,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:28:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:15,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:28:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87381500] [2021-12-22 19:28:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87381500] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:28:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390535812] [2021-12-22 19:28:15,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 19:28:15,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:28:15,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:28:15,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:28:15,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-22 19:28:15,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:28:15,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-22 19:28:15,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:28:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:15,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:28:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:28:22,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390535812] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:28:22,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:28:22,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-22 19:28:22,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626529033] [2021-12-22 19:28:22,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:28:22,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-22 19:28:22,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:28:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-22 19:28:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2021-12-22 19:28:22,056 INFO L87 Difference]: Start difference. First operand 5850 states and 5942 transitions. Second operand has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:28:34,387 INFO L93 Difference]: Finished difference Result 13769 states and 13910 transitions. [2021-12-22 19:28:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2021-12-22 19:28:34,388 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-12-22 19:28:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:28:34,430 INFO L225 Difference]: With dead ends: 13769 [2021-12-22 19:28:34,430 INFO L226 Difference]: Without dead ends: 13768 [2021-12-22 19:28:34,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30092 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=37097, Invalid=89995, Unknown=0, NotChecked=0, Total=127092 [2021-12-22 19:28:34,445 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 7168 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7170 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 19:28:34,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7170 Valid, 2138 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 19:28:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2021-12-22 19:28:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 13674. [2021-12-22 19:28:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13674 states, 11667 states have (on average 1.0143138767463786) internal successors, (11834), 11646 states have internal predecessors, (11834), 96 states have call successors, (96), 95 states have call predecessors, (96), 1909 states have return successors, (1932), 1932 states have call predecessors, (1932), 95 states have call successors, (1932) [2021-12-22 19:28:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13674 states to 13674 states and 13862 transitions. [2021-12-22 19:28:34,711 INFO L78 Accepts]: Start accepts. Automaton has 13674 states and 13862 transitions. Word has length 238 [2021-12-22 19:28:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:28:34,712 INFO L470 AbstractCegarLoop]: Abstraction has 13674 states and 13862 transitions. [2021-12-22 19:28:34,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.0105820105820107) internal successors, (380), 98 states have internal predecessors, (380), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:28:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 13674 states and 13862 transitions. [2021-12-22 19:28:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-22 19:28:34,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:28:34,721 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-12-22 19:28:34,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:28:34,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:34,935 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:28:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:28:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1518549206, now seen corresponding path program 4 times [2021-12-22 19:28:34,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:28:34,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849701056] [2021-12-22 19:28:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:28:34,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:28:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 19:28:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 19:28:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:28:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-12-22 19:28:36,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:28:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849701056] [2021-12-22 19:28:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849701056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:28:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69785672] [2021-12-22 19:28:36,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:28:36,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:28:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:28:36,524 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:28:36,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:28:36,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:28:36,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:28:36,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-22 19:28:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:28:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-12-22 19:28:37,442 INFO L328 TraceCheckSpWp]: Computing backward predicates...