./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90ff89d2ba0517af453003604f3ee5a230759bec ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:52,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:52,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:52,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:52,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:52,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:52,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:52,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:52,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:52,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:52,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:52,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:52,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:52,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:52,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:52,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:52,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:52,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:52,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:52,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:52,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:52,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:52,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:52,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:52,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:52,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:52,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:52,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:52,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:52,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:52,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:52,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:52,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:52,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:52,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:52,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:52,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:52,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:52,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:52,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:52,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:52,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:37:52,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:52,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:52,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:52,483 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:52,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:52,484 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:52,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:52,484 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:52,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:52,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:52,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:52,485 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:52,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:52,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:52,486 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:52,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:52,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:52,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:37:52,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:52,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:52,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:52,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:52,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:52,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:52,489 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:37:52,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:52,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:52,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:52,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:52,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:52,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:52,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:52,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:52,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:52,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:52,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:52,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:52,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:52,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:52,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:52,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:52,494 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90ff89d2ba0517af453003604f3ee5a230759bec [2020-11-28 07:37:52,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:52,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:52,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:52,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:52,803 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:52,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2020-11-28 07:37:52,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/data/bbb1e0618/d8140a5238b04b51b8c70d08adb207f2/FLAGeda1a596e [2020-11-28 07:37:53,322 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:53,323 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/sv-benchmarks/c/recursive/McCarthy91-1.c [2020-11-28 07:37:53,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/data/bbb1e0618/d8140a5238b04b51b8c70d08adb207f2/FLAGeda1a596e [2020-11-28 07:37:53,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/data/bbb1e0618/d8140a5238b04b51b8c70d08adb207f2 [2020-11-28 07:37:53,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:53,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:53,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:53,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:53,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497a2223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53, skipping insertion in model container [2020-11-28 07:37:53,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:53,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:53,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,962 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:53,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,988 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:53,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53 WrapperNode [2020-11-28 07:37:53,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:53,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:53,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:54,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:54,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:54,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:54,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:54,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:54,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:54,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:54,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:54,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:54,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-11-28 07:37:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-11-28 07:37:54,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:54,476 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:37:54,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54 BoogieIcfgContainer [2020-11-28 07:37:54,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:54,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:54,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:54,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:54,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:53" (1/3) ... [2020-11-28 07:37:54,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7829bf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:54, skipping insertion in model container [2020-11-28 07:37:54,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (2/3) ... [2020-11-28 07:37:54,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7829bf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:54, skipping insertion in model container [2020-11-28 07:37:54,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54" (3/3) ... [2020-11-28 07:37:54,500 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2020-11-28 07:37:54,520 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:54,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:37:54,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:37:54,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:54,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:54,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:54,566 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:54,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:54,566 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:54,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:54,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 07:37:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:37:54,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:54,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:37:54,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:54,609 INFO L82 PathProgramCache]: Analyzing trace with hash 83776360, now seen corresponding path program 1 times [2020-11-28 07:37:54,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:54,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342547874] [2020-11-28 07:37:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:54,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342547874] [2020-11-28 07:37:54,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:54,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:54,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145331462] [2020-11-28 07:37:54,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:54,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:54,825 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-11-28 07:37:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,021 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-28 07:37:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:55,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 07:37:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,033 INFO L225 Difference]: With dead ends: 46 [2020-11-28 07:37:55,033 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 07:37:55,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 07:37:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-28 07:37:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 07:37:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-28 07:37:55,085 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2020-11-28 07:37:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,086 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-28 07:37:55,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-11-28 07:37:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:37:55,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:37:55,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:55,088 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash 83776520, now seen corresponding path program 1 times [2020-11-28 07:37:55,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800361809] [2020-11-28 07:37:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800361809] [2020-11-28 07:37:55,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380564850] [2020-11-28 07:37:55,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:55,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:55,145 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2020-11-28 07:37:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,174 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-28 07:37:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:55,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:37:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,176 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:37:55,177 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:37:55,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:37:55,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-11-28 07:37:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:37:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-11-28 07:37:55,189 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2020-11-28 07:37:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,189 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-11-28 07:37:55,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-11-28 07:37:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:37:55,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:55,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1697900065, now seen corresponding path program 1 times [2020-11-28 07:37:55,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806433169] [2020-11-28 07:37:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806433169] [2020-11-28 07:37:55,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:55,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125374864] [2020-11-28 07:37:55,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:55,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:55,225 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2020-11-28 07:37:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,275 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-11-28 07:37:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:55,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:37:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,277 INFO L225 Difference]: With dead ends: 39 [2020-11-28 07:37:55,277 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 07:37:55,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 07:37:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-11-28 07:37:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 07:37:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-28 07:37:55,287 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2020-11-28 07:37:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,287 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-28 07:37:55,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-28 07:37:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:37:55,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:55,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1697895100, now seen corresponding path program 1 times [2020-11-28 07:37:55,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906510628] [2020-11-28 07:37:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906510628] [2020-11-28 07:37:55,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:55,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058262805] [2020-11-28 07:37:55,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:55,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:55,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:55,362 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-11-28 07:37:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,483 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-11-28 07:37:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:55,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 07:37:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,485 INFO L225 Difference]: With dead ends: 50 [2020-11-28 07:37:55,485 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 07:37:55,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 07:37:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-11-28 07:37:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 07:37:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-11-28 07:37:55,508 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2020-11-28 07:37:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,509 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-11-28 07:37:55,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-11-28 07:37:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:55,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,510 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:37:55,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,511 INFO L82 PathProgramCache]: Analyzing trace with hash -757918958, now seen corresponding path program 1 times [2020-11-28 07:37:55,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026965799] [2020-11-28 07:37:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026965799] [2020-11-28 07:37:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:37:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129109376] [2020-11-28 07:37:55,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:55,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:55,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:55,578 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2020-11-28 07:37:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,697 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-11-28 07:37:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:55,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:37:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,700 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:37:55,700 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 07:37:55,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 07:37:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-11-28 07:37:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:37:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-11-28 07:37:55,720 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2020-11-28 07:37:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,720 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-11-28 07:37:55,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-11-28 07:37:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:55,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:37:55,722 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1364699866, now seen corresponding path program 1 times [2020-11-28 07:37:55,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877945511] [2020-11-28 07:37:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877945511] [2020-11-28 07:37:55,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:55,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229086369] [2020-11-28 07:37:55,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:55,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:55,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:55,798 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2020-11-28 07:37:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,816 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-11-28 07:37:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:55,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:37:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,820 INFO L225 Difference]: With dead ends: 58 [2020-11-28 07:37:55,821 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:37:55,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:37:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 07:37:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 07:37:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-11-28 07:37:55,835 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2020-11-28 07:37:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,836 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-11-28 07:37:55,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-11-28 07:37:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:37:55,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,837 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:37:55,837 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash -223659743, now seen corresponding path program 1 times [2020-11-28 07:37:55,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412178816] [2020-11-28 07:37:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:37:55,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412178816] [2020-11-28 07:37:55,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113768687] [2020-11-28 07:37:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:56,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:37:56,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:56,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:56,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058783606] [2020-11-28 07:37:56,527 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-11-28 07:37:56,528 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:37:56,533 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-28 07:37:56,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:37:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2020-11-28 07:37:56,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886915334] [2020-11-28 07:37:56,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-28 07:37:56,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-28 07:37:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:37:56,539 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 22 states. [2020-11-28 07:37:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:57,569 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-11-28 07:37:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-28 07:37:57,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2020-11-28 07:37:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:57,572 INFO L225 Difference]: With dead ends: 83 [2020-11-28 07:37:57,572 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 07:37:57,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2020-11-28 07:37:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 07:37:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2020-11-28 07:37:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 07:37:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-11-28 07:37:57,598 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2020-11-28 07:37:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:57,598 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-11-28 07:37:57,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-28 07:37:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-11-28 07:37:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:37:57,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:57,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:57,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 07:37:57,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1656487595, now seen corresponding path program 1 times [2020-11-28 07:37:57,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:57,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687760207] [2020-11-28 07:37:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:37:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687760207] [2020-11-28 07:37:57,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:57,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:37:57,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398973010] [2020-11-28 07:37:57,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:37:57,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:37:57,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:57,859 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-11-28 07:37:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:58,025 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-11-28 07:37:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:37:58,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 07:37:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:58,027 INFO L225 Difference]: With dead ends: 98 [2020-11-28 07:37:58,027 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 07:37:58,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:37:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 07:37:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-28 07:37:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 07:37:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2020-11-28 07:37:58,062 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2020-11-28 07:37:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:58,062 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2020-11-28 07:37:58,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:37:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2020-11-28 07:37:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 07:37:58,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:58,070 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 07:37:58,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:37:58,070 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:37:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash -819894864, now seen corresponding path program 1 times [2020-11-28 07:37:58,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:58,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552588595] [2020-11-28 07:37:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 07:37:58,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552588595] [2020-11-28 07:37:58,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:58,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:37:58,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765821267] [2020-11-28 07:37:58,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:37:58,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:58,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:37:58,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:37:58,192 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2020-11-28 07:37:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:58,403 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2020-11-28 07:37:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:37:58,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-11-28 07:37:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:58,404 INFO L225 Difference]: With dead ends: 92 [2020-11-28 07:37:58,404 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:58,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:37:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:58,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-28 07:37:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:58,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:58,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:37:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:58,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:58,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:37:58,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:58,724 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,818 INFO L274 CegarLoopResult]: For program point L29-6(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L270 CegarLoopResult]: At program point L29-7(lines 29 33) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,819 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (or (and (<= f91_~x 100) (<= 91 f91_~x)) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 0 (+ f91_~x 2147483648)) (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647)))) [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L270 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (<= 91 |f91_#t~ret7|)) (.cse1 (<= |f91_#t~ret7| 2147483648))) (and (or (and .cse0 (<= f91_~x 100) (<= 91 f91_~x) .cse1) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and .cse0 (<= 0 (+ f91_~x 2147483648)) .cse1 (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647))))) [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,820 INFO L274 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-28 07:37:58,821 INFO L277 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2020-11-28 07:37:58,821 INFO L274 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2020-11-28 07:37:58,821 INFO L274 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-28 07:37:58,821 INFO L274 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,821 INFO L274 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-28 07:37:58,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:58 BoogieIcfgContainer [2020-11-28 07:37:58,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:58,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:58,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:58,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:58,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54" (3/4) ... [2020-11-28 07:37:58,840 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:58,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2020-11-28 07:37:58,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:37:58,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:37:58,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:37:58,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:58,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b17cf05d-5f41-4d9e-9ae1-ffc572677991/bin/utaipan/witness.graphml [2020-11-28 07:37:58,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:58,926 INFO L168 Benchmark]: Toolchain (without parser) took 5175.49 ms. Allocated memory was 90.2 MB in the beginning and 144.7 MB in the end (delta: 54.5 MB). Free memory was 57.7 MB in the beginning and 93.9 MB in the end (delta: -36.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,926 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 46.9 MB in the beginning and 46.9 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:58,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 90.2 MB. Free memory was 57.5 MB in the beginning and 67.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.80 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:58,928 INFO L168 Benchmark]: Boogie Preprocessor took 21.06 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 902.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,929 INFO L168 Benchmark]: RCFGBuilder took 434.22 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 49.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,929 INFO L168 Benchmark]: TraceAbstraction took 4355.92 ms. Allocated memory was 90.2 MB in the beginning and 144.7 MB in the end (delta: 54.5 MB). Free memory was 48.9 MB in the beginning and 97.0 MB in the end (delta: -48.1 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,930 INFO L168 Benchmark]: Witness Printer took 88.79 ms. Allocated memory is still 144.7 MB. Free memory was 97.0 MB in the beginning and 93.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:58,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 46.9 MB in the beginning and 46.9 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 90.2 MB. Free memory was 57.5 MB in the beginning and 67.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.80 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.06 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 65.3 MB in the end (delta: 902.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 434.22 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 49.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4355.92 ms. Allocated memory was 90.2 MB in the beginning and 144.7 MB in the end (delta: 54.5 MB). Free memory was 48.9 MB in the beginning and 97.0 MB in the end (delta: -48.1 MB). Peak memory consumption was 65.5 MB. Max. memory is 16.1 GB. * Witness Printer took 88.79 ms. Allocated memory is still 144.7 MB. Free memory was 97.0 MB in the beginning and 93.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 321 SDslu, 295 SDs, 0 SdLazy, 617 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 99 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 56/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...