./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh --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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:48:08,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:48:08,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:48:08,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:48:08,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:48:08,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:48:08,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:48:08,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:48:08,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:48:08,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:48:08,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:48:08,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:48:08,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:48:08,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:48:08,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:48:08,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:48:08,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:48:08,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:48:08,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:48:08,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:48:08,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:48:08,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:48:08,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:48:08,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:48:08,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:48:08,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:48:08,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:48:08,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:48:08,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:48:08,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:48:08,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:48:08,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:48:08,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:48:08,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:48:08,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:48:08,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:48:08,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:48:08,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:48:08,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:48:08,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:48:08,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:48:08,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 10:48:08,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:48:08,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:48:08,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:48:08,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:48:08,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:48:08,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:48:08,155 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:48:08,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:48:08,156 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:48:08,157 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:48:08,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:48:08,157 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:48:08,157 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:48:08,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:48:08,158 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:48:08,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:48:08,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:48:08,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:48:08,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:48:08,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:48:08,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:48:08,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:48:08,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:48:08,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:48:08,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:48:08,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:48:08,161 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2022-12-14 10:48:08,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:48:08,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:48:08,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:48:08,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:48:08,386 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:48:08,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-12-14 10:48:11,008 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:48:11,133 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:48:11,134 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/sv-benchmarks/c/verifythis/elimination_max_rec.c [2022-12-14 10:48:11,138 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/data/839dc23d2/2c2f739912df48a98066b97d413ce30c/FLAG103d3f4fd [2022-12-14 10:48:11,148 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/data/839dc23d2/2c2f739912df48a98066b97d413ce30c [2022-12-14 10:48:11,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:48:11,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:48:11,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:48:11,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:48:11,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:48:11,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548e54c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11, skipping insertion in model container [2022-12-14 10:48:11,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:48:11,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:48:11,314 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-12-14 10:48:11,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:48:11,340 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:48:11,352 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2022-12-14 10:48:11,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:48:11,372 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:48:11,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11 WrapperNode [2022-12-14 10:48:11,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:48:11,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:48:11,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:48:11,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:48:11,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,405 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-12-14 10:48:11,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:48:11,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:48:11,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:48:11,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:48:11,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:48:11,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:48:11,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:48:11,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:48:11,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (1/1) ... [2022-12-14 10:48:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:48:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:11,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:48:11,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:48:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:48:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:48:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:48:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:48:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure check [2022-12-14 10:48:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2022-12-14 10:48:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:48:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:48:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:48:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:48:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:48:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:48:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:48:11,572 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:48:11,575 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:48:11,729 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:48:11,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:48:11,755 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:48:11,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:48:11 BoogieIcfgContainer [2022-12-14 10:48:11,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:48:11,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:48:11,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:48:11,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:48:11,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:48:11" (1/3) ... [2022-12-14 10:48:11,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a93a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:48:11, skipping insertion in model container [2022-12-14 10:48:11,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:48:11" (2/3) ... [2022-12-14 10:48:11,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a93a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:48:11, skipping insertion in model container [2022-12-14 10:48:11,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:48:11" (3/3) ... [2022-12-14 10:48:11,764 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2022-12-14 10:48:11,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:48:11,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 10:48:11,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:48:11,817 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cb3cde2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:48:11,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 10:48:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:48:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:48:11,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:11,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 10:48:11,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1259650339, now seen corresponding path program 1 times [2022-12-14 10:48:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331907443] [2022-12-14 10:48:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:12,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331907443] [2022-12-14 10:48:12,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331907443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:12,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:12,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:48:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374267861] [2022-12-14 10:48:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:48:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:48:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:48:12,117 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:48:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:12,170 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-12-14 10:48:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:48:12,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 6 [2022-12-14 10:48:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:12,178 INFO L225 Difference]: With dead ends: 35 [2022-12-14 10:48:12,178 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 10:48:12,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:48:12,184 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:12,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 78 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 10:48:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 10:48:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:48:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-12-14 10:48:12,218 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2022-12-14 10:48:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:12,220 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-12-14 10:48:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:48:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-12-14 10:48:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:48:12,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:12,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:12,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:48:12,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182402, now seen corresponding path program 1 times [2022-12-14 10:48:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:12,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483812559] [2022-12-14 10:48:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:12,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483812559] [2022-12-14 10:48:12,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483812559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:12,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:12,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:48:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580217327] [2022-12-14 10:48:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:12,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:48:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:48:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:48:12,329 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 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) [2022-12-14 10:48:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:12,387 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-12-14 10:48:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:48:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 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) Word has length 16 [2022-12-14 10:48:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:12,388 INFO L225 Difference]: With dead ends: 39 [2022-12-14 10:48:12,388 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 10:48:12,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:48:12,390 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:12,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 60 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 10:48:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2022-12-14 10:48:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-12-14 10:48:12,396 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-12-14 10:48:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-12-14 10:48:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 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) [2022-12-14 10:48:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-12-14 10:48:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:48:12,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:12,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:12,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:48:12,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1257182594, now seen corresponding path program 1 times [2022-12-14 10:48:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:12,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237529388] [2022-12-14 10:48:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:12,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:12,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:12,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237529388] [2022-12-14 10:48:12,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237529388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:12,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:12,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:48:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008935799] [2022-12-14 10:48:12,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:48:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:48:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:48:12,489 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 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) [2022-12-14 10:48:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:12,572 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-12-14 10:48:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:48:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 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) Word has length 16 [2022-12-14 10:48:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:12,573 INFO L225 Difference]: With dead ends: 37 [2022-12-14 10:48:12,573 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 10:48:12,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:48:12,575 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:12,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 10:48:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-12-14 10:48:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 26 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-12-14 10:48:12,580 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 16 [2022-12-14 10:48:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:12,580 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-12-14 10:48:12,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 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) [2022-12-14 10:48:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-12-14 10:48:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:48:12,582 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:12,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:12,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:48:12,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 317954823, now seen corresponding path program 1 times [2022-12-14 10:48:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097731198] [2022-12-14 10:48:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:12,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:12,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097731198] [2022-12-14 10:48:12,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097731198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:12,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:48:12,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:48:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012637854] [2022-12-14 10:48:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:48:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:48:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:48:12,663 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 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) [2022-12-14 10:48:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:12,715 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-12-14 10:48:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:48:12,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 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) Word has length 17 [2022-12-14 10:48:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:12,716 INFO L225 Difference]: With dead ends: 34 [2022-12-14 10:48:12,716 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 10:48:12,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:48:12,718 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:12,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:12,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 10:48:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-14 10:48:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-12-14 10:48:12,723 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2022-12-14 10:48:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:12,723 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-12-14 10:48:12,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 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) [2022-12-14 10:48:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-12-14 10:48:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:48:12,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:12,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:48:12,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1954952880, now seen corresponding path program 1 times [2022-12-14 10:48:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:12,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046943414] [2022-12-14 10:48:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:12,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:12,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046943414] [2022-12-14 10:48:12,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046943414] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:12,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596002440] [2022-12-14 10:48:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:12,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:12,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:12,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:48:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:12,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:48:12,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:12,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:48:12,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596002440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:48:12,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:48:12,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-12-14 10:48:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281104112] [2022-12-14 10:48:12,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:48:12,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:48:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:48:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:48:12,964 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:13,052 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-12-14 10:48:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:48:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-12-14 10:48:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:13,053 INFO L225 Difference]: With dead ends: 34 [2022-12-14 10:48:13,053 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 10:48:13,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:48:13,055 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:13,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 61 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:48:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 10:48:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-12-14 10:48:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-12-14 10:48:13,061 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 26 [2022-12-14 10:48:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:13,061 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-12-14 10:48:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-12-14 10:48:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:48:13,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:13,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:13,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:13,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:13,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1954953072, now seen corresponding path program 1 times [2022-12-14 10:48:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:13,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670618671] [2022-12-14 10:48:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:13,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:13,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670618671] [2022-12-14 10:48:13,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670618671] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:13,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996141138] [2022-12-14 10:48:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:13,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:13,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:13,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:48:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:13,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:48:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:13,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:13,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996141138] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380185575] [2022-12-14 10:48:13,648 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 10:48:13,648 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:48:13,652 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2022-12-14 10:48:13,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:48:13,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-12-14 10:48:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891591929] [2022-12-14 10:48:13,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 10:48:13,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 10:48:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:48:13,657 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 16 states have internal predecessors, (39), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 10:48:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:13,870 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-12-14 10:48:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:48:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 16 states have internal predecessors, (39), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 26 [2022-12-14 10:48:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:13,871 INFO L225 Difference]: With dead ends: 34 [2022-12-14 10:48:13,871 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 10:48:13,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 10:48:13,873 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 79 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 71 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:48:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 10:48:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-12-14 10:48:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:48:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-14 10:48:13,879 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2022-12-14 10:48:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:13,880 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-14 10:48:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 16 states have internal predecessors, (39), 9 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 10:48:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-14 10:48:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 10:48:13,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:13,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:13,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:48:14,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:14,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash 473997203, now seen corresponding path program 1 times [2022-12-14 10:48:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009415592] [2022-12-14 10:48:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:14,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009415592] [2022-12-14 10:48:14,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009415592] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976024660] [2022-12-14 10:48:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:14,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:14,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:14,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:14,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:48:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:14,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:48:14,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:14,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:48:14,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976024660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:14,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1247678505] [2022-12-14 10:48:14,466 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 10:48:14,467 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:48:14,467 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2022-12-14 10:48:14,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:48:14,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-14 10:48:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450257874] [2022-12-14 10:48:14,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:14,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 10:48:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 10:48:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:48:14,471 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:48:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:14,635 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-12-14 10:48:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:48:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 27 [2022-12-14 10:48:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:14,636 INFO L225 Difference]: With dead ends: 66 [2022-12-14 10:48:14,636 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 10:48:14,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:48:14,638 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:14,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 102 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:48:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 10:48:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2022-12-14 10:48:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 47 states have internal predecessors, (52), 12 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:48:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-12-14 10:48:14,650 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 27 [2022-12-14 10:48:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:14,650 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-12-14 10:48:14,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:48:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-12-14 10:48:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 10:48:14,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:14,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:14,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:48:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:14,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 10:48:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -57820151, now seen corresponding path program 2 times [2022-12-14 10:48:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:48:14,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214019854] [2022-12-14 10:48:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:48:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:48:15,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:48:15,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214019854] [2022-12-14 10:48:15,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214019854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:15,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869530122] [2022-12-14 10:48:15,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:48:15,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:15,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:15,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:48:15,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 10:48:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:48:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 10:48:15,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 10:48:15,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 10:48:15,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869530122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:48:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976432541] [2022-12-14 10:48:15,613 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 10:48:15,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:48:15,614 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2022-12-14 10:48:15,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:48:15,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 29 [2022-12-14 10:48:15,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241025085] [2022-12-14 10:48:15,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:15,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 10:48:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:48:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 10:48:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-12-14 10:48:15,617 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 30 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 10:48:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:16,447 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2022-12-14 10:48:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 10:48:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 57 [2022-12-14 10:48:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:16,448 INFO L225 Difference]: With dead ends: 77 [2022-12-14 10:48:16,448 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 10:48:16,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1100, Invalid=3592, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 10:48:16,450 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 263 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:16,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 55 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:48:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 10:48:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 10:48:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:48:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 10:48:16,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-12-14 10:48:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:16,451 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 10:48:16,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 2.576923076923077) internal successors, (67), 23 states have internal predecessors, (67), 12 states have call successors, (21), 8 states have call predecessors, (21), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 10:48:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 10:48:16,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 10:48:16,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 10:48:16,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 10:48:16,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 10:48:16,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 10:48:16,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 10:48:16,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 10:48:16,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:48:16,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:16,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 10:48:17,290 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 10:48:17,290 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 10:48:17,290 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-12-14 10:48:17,290 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-12-14 10:48:17,290 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2022-12-14 10:48:17,290 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 2147483647) [2022-12-14 10:48:17,291 INFO L895 garLoopResultBuilder]: At program point L46-2(line 46) the Hoare annotation is: (and (< |ULTIMATE.start_main_~n~0#1| 1073741824) (<= 0 |ULTIMATE.start_main_~n~0#1|)) [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-12-14 10:48:17,291 INFO L895 garLoopResultBuilder]: At program point L46-3(line 46) the Hoare annotation is: (and (not (<= 1073741824 |ULTIMATE.start_main_~n~0#1|)) (<= 0 |ULTIMATE.start_main_~n~0#1|)) [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 10:48:17,291 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point checkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-14 10:48:17,291 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-12-14 10:48:17,291 INFO L899 garLoopResultBuilder]: For program point checkErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 10:48:17,292 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 26) no Hoare annotation was computed. [2022-12-14 10:48:17,292 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-12-14 10:48:17,292 INFO L899 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2022-12-14 10:48:17,292 INFO L895 garLoopResultBuilder]: At program point L25-4(lines 25 26) the Hoare annotation is: (let ((.cse8 (<= 1 |check_#in~y|)) (.cse9 (<= |check_#in~y| 2147483646)) (.cse6 (= |check_#in~x| 0)) (.cse7 (<= check_~y 2147483646))) (let ((.cse4 (<= check_~n 2147483647)) (.cse5 (let ((.cse10 (<= 0 |check_#in~x|)) (.cse11 (<= 1 check_~y)) (.cse12 (<= 1 check_~x))) (or (and .cse8 .cse9 .cse10 .cse11 .cse12 .cse7) (and .cse9 .cse6 .cse10 .cse11 .cse12 .cse7)))) (.cse0 (not .cse9)) (.cse1 (not (<= 1 |check_#in~x|))) (.cse2 (not (<= |check_#in~n| 2147483647))) (.cse3 (not .cse8))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 .cse5 (< check_~x 2147483647))) (or .cse0 (not .cse6) .cse2 (and .cse4 (= check_~x 0) (< 0 (+ check_~y 2147483648)) .cse7) (and .cse4 .cse5 (<= check_~x 1))) (or .cse0 .cse1 (<= check_~x 2) .cse2 (not (<= |check_#in~x| 1)) .cse3) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 3)))))) [2022-12-14 10:48:17,292 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-14 10:48:17,292 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 39) the Hoare annotation is: true [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L902 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point checkErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point checkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-12-14 10:48:17,293 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-12-14 10:48:17,294 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (let ((.cse1 (not (<= 1 |check_#in~x|))) (.cse3 (not (<= 1 |check_#in~y|))) (.cse0 (not (<= |check_#in~y| 2147483646))) (.cse4 (<= check_~n 2147483647)) (.cse5 (<= check_~y 2147483646)) (.cse2 (not (<= |check_#in~n| 2147483647)))) (and (or .cse0 .cse1 .cse2 (not (<= |check_#in~x| 1)) .cse3 (<= check_~x 1)) (or .cse0 .cse1 .cse2 (<= check_~x 4) .cse3 (not (<= |check_#in~x| 4))) (or .cse0 .cse1 .cse2 .cse3 (and .cse4 (not (<= check_~y check_~x)) (<= 1 check_~x) .cse5)) (or .cse0 .cse1 (<= check_~x 3) .cse2 .cse3 (not (<= |check_#in~x| 3))) (or .cse0 .cse1 (<= check_~x 2) .cse2 .cse3 (not (<= |check_#in~x| 2))) (or .cse0 (and .cse4 (<= (+ check_~x 1) check_~y) (= check_~x 0) .cse5) (not (= |check_#in~x| 0)) .cse2))) [2022-12-14 10:48:17,294 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 10:48:17,294 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2022-12-14 10:48:17,294 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2022-12-14 10:48:17,294 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2022-12-14 10:48:17,297 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-14 10:48:17,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:48:17,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:48:17 BoogieIcfgContainer [2022-12-14 10:48:17,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:48:17,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:48:17,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:48:17,308 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:48:17,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:48:11" (3/4) ... [2022-12-14 10:48:17,310 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 10:48:17,314 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 10:48:17,314 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2022-12-14 10:48:17,314 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 10:48:17,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-14 10:48:17,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 10:48:17,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 10:48:17,317 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:48:17,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:48:17,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:48:17,340 INFO L158 Benchmark]: Toolchain (without parser) took 6189.15ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 111.6MB in the beginning and 148.7MB in the end (delta: -37.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:48:17,340 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:48:17,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.39ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 101.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:48:17,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.54ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 99.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:48:17,341 INFO L158 Benchmark]: Boogie Preprocessor took 22.66ms. Allocated memory is still 151.0MB. Free memory was 99.6MB in the beginning and 98.6MB in the end (delta: 944.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:48:17,342 INFO L158 Benchmark]: RCFGBuilder took 327.65ms. Allocated memory is still 151.0MB. Free memory was 98.1MB in the beginning and 84.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 10:48:17,342 INFO L158 Benchmark]: TraceAbstraction took 5548.47ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 83.4MB in the beginning and 151.8MB in the end (delta: -68.4MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2022-12-14 10:48:17,342 INFO L158 Benchmark]: Witness Printer took 32.14ms. Allocated memory is still 182.5MB. Free memory was 151.8MB in the beginning and 148.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:48:17,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.39ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 101.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.54ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 99.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.66ms. Allocated memory is still 151.0MB. Free memory was 99.6MB in the beginning and 98.6MB in the end (delta: 944.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.65ms. Allocated memory is still 151.0MB. Free memory was 98.1MB in the beginning and 84.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5548.47ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 83.4MB in the beginning and 151.8MB in the end (delta: -68.4MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Witness Printer took 32.14ms. Allocated memory is still 182.5MB. Free memory was 151.8MB in the beginning and 148.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 537 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 536 mSDsluCounter, 536 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 410 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1009 IncrementalHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 126 mSDtfsCounter, 1009 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=7, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 77 PreInvPairs, 90 NumberOfFragments, 389 HoareAnnotationTreeSize, 77 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3073 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 1052 SizeOfPredicates, 25 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 202/352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: !(1073741824 <= n) && 0 <= n RESULT: Ultimate proved your program to be correct! [2022-12-14 10:48:17,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a01e0674-3194-420b-b5b1-615c4535cfa6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE