./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/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_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/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_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/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 715908359373978289cc76ce2f00faf49f4d4a3c6ddae64771646fc969bea981 --- 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 08:12:38,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:12:38,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:12:38,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:12:38,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:12:38,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:12:38,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:12:38,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:12:38,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:12:38,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:12:38,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:12:38,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:12:38,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:12:38,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:12:38,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:12:38,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:12:38,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:12:38,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:12:38,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:12:38,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:12:38,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:12:38,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:12:38,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:12:38,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:12:38,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:12:38,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:12:38,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:12:38,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:12:38,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:12:38,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:12:38,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:12:38,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:12:38,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:12:38,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:12:38,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:12:38,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:12:38,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:12:38,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:12:38,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:12:38,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:12:38,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:12:38,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 08:12:38,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:12:38,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:12:38,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:12:38,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:12:38,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:12:38,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:12:38,722 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:12:38,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:12:38,722 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:12:38,723 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:12:38,723 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:12:38,724 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:12:38,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:12:38,724 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:12:38,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:12:38,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:12:38,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:12:38,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:12:38,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:12:38,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:12:38,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:12:38,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:12:38,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:12:38,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:12:38,727 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_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 715908359373978289cc76ce2f00faf49f4d4a3c6ddae64771646fc969bea981 [2022-12-14 08:12:38,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:12:38,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:12:38,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:12:38,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:12:38,914 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:12:38,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2022-12-14 08:12:41,507 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:12:41,662 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:12:41,662 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2022-12-14 08:12:41,666 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/data/2356526e0/f9f088acddeb420ab663db1f7c128e03/FLAG552aa0fd3 [2022-12-14 08:12:42,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/data/2356526e0/f9f088acddeb420ab663db1f7c128e03 [2022-12-14 08:12:42,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:12:42,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:12:42,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:12:42,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:12:42,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:12:42,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd72118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42, skipping insertion in model container [2022-12-14 08:12:42,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:12:42,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:12:42,216 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_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c[454,467] [2022-12-14 08:12:42,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:12:42,224 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:12:42,233 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_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c[454,467] [2022-12-14 08:12:42,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:12:42,243 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:12:42,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42 WrapperNode [2022-12-14 08:12:42,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:12:42,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:12:42,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:12:42,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:12:42,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,264 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-14 08:12:42,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:12:42,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:12:42,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:12:42,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:12:42,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:12:42,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:12:42,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:12:42,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:12:42,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (1/1) ... [2022-12-14 08:12:42,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:12:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:42,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:12:42,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:12:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:12:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:12:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:12:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:12:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-14 08:12:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-14 08:12:42,381 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:12:42,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:12:42,458 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:12:42,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:12:42,479 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:12:42,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:12:42 BoogieIcfgContainer [2022-12-14 08:12:42,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:12:42,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:12:42,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:12:42,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:12:42,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:12:42" (1/3) ... [2022-12-14 08:12:42,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2c5bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:12:42, skipping insertion in model container [2022-12-14 08:12:42,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:42" (2/3) ... [2022-12-14 08:12:42,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2c5bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:12:42, skipping insertion in model container [2022-12-14 08:12:42,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:12:42" (3/3) ... [2022-12-14 08:12:42,492 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i15_o15-1.c [2022-12-14 08:12:42,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:12:42,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 08:12:42,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:12:42,576 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;@6d32e2d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:12:42,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 08:12:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 08:12:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 08:12:42,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:42,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 08:12:42,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash 62814452, now seen corresponding path program 1 times [2022-12-14 08:12:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:42,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196089388] [2022-12-14 08:12:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:42,770 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 08:12:42,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:42,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196089388] [2022-12-14 08:12:42,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196089388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:42,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:42,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:12:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250220216] [2022-12-14 08:12:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:12:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:12:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:12:42,807 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:42,871 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-12-14 08:12:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:12:42,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 08:12:42,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:42,887 INFO L225 Difference]: With dead ends: 36 [2022-12-14 08:12:42,887 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 08:12:42,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:12:42,892 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:42,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:12:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 08:12:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 08:12:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 08:12:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 08:12:42,923 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2022-12-14 08:12:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:42,924 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 08:12:42,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 08:12:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:12:42,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:42,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:42,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:12:42,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 200486833, now seen corresponding path program 1 times [2022-12-14 08:12:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:42,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123426554] [2022-12-14 08:12:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:43,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:43,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123426554] [2022-12-14 08:12:43,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123426554] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:43,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142601719] [2022-12-14 08:12:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:43,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:43,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:12:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:43,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:12:43,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:43,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:43,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142601719] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [383981881] [2022-12-14 08:12:43,188 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:12:43,188 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:43,191 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 08:12:43,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:43,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-14 08:12:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822825755] [2022-12-14 08:12:43,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 08:12:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 08:12:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:12:43,197 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:43,371 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-12-14 08:12:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 08:12:43,371 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 08:12:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:43,373 INFO L225 Difference]: With dead ends: 77 [2022-12-14 08:12:43,373 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 08:12:43,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:12:43,375 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:43,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 92 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:12:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 08:12:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-12-14 08:12:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.425) internal successors, (57), 43 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:12:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2022-12-14 08:12:43,388 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 10 [2022-12-14 08:12:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:43,388 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2022-12-14 08:12:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:43,389 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2022-12-14 08:12:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:12:43,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:43,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 08:12:43,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:12:43,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:43,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1920124580, now seen corresponding path program 1 times [2022-12-14 08:12:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:43,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533761454] [2022-12-14 08:12:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:43,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:43,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533761454] [2022-12-14 08:12:43,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533761454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:43,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817850086] [2022-12-14 08:12:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:43,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:43,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:43,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:43,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:12:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:12:43,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:43,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:12:43,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817850086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:43,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:12:43,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 08:12:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862965085] [2022-12-14 08:12:43,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:43,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:12:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:12:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:12:43,852 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:43,892 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-12-14 08:12:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:12:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 08:12:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:43,894 INFO L225 Difference]: With dead ends: 56 [2022-12-14 08:12:43,894 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 08:12:43,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:12:43,895 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:43,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 23 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:12:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 08:12:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-12-14 08:12:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:12:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2022-12-14 08:12:43,902 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 11 [2022-12-14 08:12:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:43,902 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2022-12-14 08:12:43,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2022-12-14 08:12:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 08:12:43,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:43,903 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:43,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:12:44,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:44,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1383499620, now seen corresponding path program 1 times [2022-12-14 08:12:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:44,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447797898] [2022-12-14 08:12:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:12:44,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:44,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447797898] [2022-12-14 08:12:44,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447797898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:44,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:44,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:12:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552109312] [2022-12-14 08:12:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:44,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:12:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:12:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:12:44,228 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:12:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:44,249 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-12-14 08:12:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:12:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 08:12:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:44,251 INFO L225 Difference]: With dead ends: 73 [2022-12-14 08:12:44,251 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 08:12:44,251 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 08:12:44,252 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:12:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 08:12:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 08:12:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-14 08:12:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-12-14 08:12:44,259 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2022-12-14 08:12:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:44,259 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-12-14 08:12:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:12:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-12-14 08:12:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 08:12:44,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:44,260 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:12:44,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash -746184899, now seen corresponding path program 1 times [2022-12-14 08:12:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:44,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289499736] [2022-12-14 08:12:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 08:12:44,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:44,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289499736] [2022-12-14 08:12:44,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289499736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:12:44,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:12:44,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:12:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423459796] [2022-12-14 08:12:44,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:12:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:12:44,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:12:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:12:44,287 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:12:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:44,296 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-12-14 08:12:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:12:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-12-14 08:12:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:44,297 INFO L225 Difference]: With dead ends: 71 [2022-12-14 08:12:44,297 INFO L226 Difference]: Without dead ends: 70 [2022-12-14 08:12:44,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:12:44,298 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:44,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:12:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-14 08:12:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-12-14 08:12:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-14 08:12:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-12-14 08:12:44,304 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2022-12-14 08:12:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:44,305 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-12-14 08:12:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:12:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-12-14 08:12:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 08:12:44,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:44,305 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 08:12:44,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:12:44,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -107041484, now seen corresponding path program 2 times [2022-12-14 08:12:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:44,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169114965] [2022-12-14 08:12:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:44,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169114965] [2022-12-14 08:12:44,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169114965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532709977] [2022-12-14 08:12:44,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:12:44,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:44,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:44,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:44,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:12:44,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 08:12:44,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:12:44,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:12:44,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:44,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532709977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:44,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [490812042] [2022-12-14 08:12:44,675 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:12:44,675 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:44,676 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 08:12:44,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:44,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-14 08:12:44,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732663411] [2022-12-14 08:12:44,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:44,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 08:12:44,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 08:12:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-12-14 08:12:44,678 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:45,018 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2022-12-14 08:12:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 08:12:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 08:12:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:45,020 INFO L225 Difference]: With dead ends: 187 [2022-12-14 08:12:45,020 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 08:12:45,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=1221, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 08:12:45,023 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 300 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:45,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 265 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:12:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 08:12:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2022-12-14 08:12:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2022-12-14 08:12:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-12-14 08:12:45,034 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2022-12-14 08:12:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:45,034 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-12-14 08:12:45,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-12-14 08:12:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 08:12:45,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:45,035 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 08:12:45,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:12:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 08:12:45,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -506338079, now seen corresponding path program 1 times [2022-12-14 08:12:45,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:45,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358019189] [2022-12-14 08:12:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 08:12:45,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358019189] [2022-12-14 08:12:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358019189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645495545] [2022-12-14 08:12:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:45,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:45,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:45,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:45,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:12:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:45,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 08:12:45,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:12:45,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 08:12:45,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645495545] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:45,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1960386474] [2022-12-14 08:12:45,840 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:12:45,840 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:45,841 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 08:12:45,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:45,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2022-12-14 08:12:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32295220] [2022-12-14 08:12:45,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 08:12:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 08:12:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-12-14 08:12:45,844 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 08:12:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:46,155 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2022-12-14 08:12:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 08:12:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-12-14 08:12:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:46,157 INFO L225 Difference]: With dead ends: 207 [2022-12-14 08:12:46,157 INFO L226 Difference]: Without dead ends: 141 [2022-12-14 08:12:46,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 08:12:46,159 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 187 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:46,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 327 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:12:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-14 08:12:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2022-12-14 08:12:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-14 08:12:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-12-14 08:12:46,173 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2022-12-14 08:12:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:46,174 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-12-14 08:12:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 08:12:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-12-14 08:12:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 08:12:46,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:46,175 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-12-14 08:12:46,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:12:46,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:46,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1797304428, now seen corresponding path program 3 times [2022-12-14 08:12:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:46,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612314317] [2022-12-14 08:12:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:46,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:46,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612314317] [2022-12-14 08:12:46,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612314317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:46,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779162499] [2022-12-14 08:12:46,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:12:46,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:46,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:12:46,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:12:46,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:12:46,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 08:12:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:46,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:47,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779162499] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:47,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [38211364] [2022-12-14 08:12:47,183 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:12:47,183 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:47,183 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 08:12:47,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:47,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 49 [2022-12-14 08:12:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867357459] [2022-12-14 08:12:47,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 08:12:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 08:12:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 08:12:47,187 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:47,955 INFO L93 Difference]: Finished difference Result 437 states and 469 transitions. [2022-12-14 08:12:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 08:12:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-12-14 08:12:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:47,959 INFO L225 Difference]: With dead ends: 437 [2022-12-14 08:12:47,959 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 08:12:47,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1796, Invalid=5010, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 08:12:47,961 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 753 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:47,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 536 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:12:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 08:12:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2022-12-14 08:12:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.1206896551724137) internal successors, (325), 289 states have internal predecessors, (325), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2022-12-14 08:12:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 399 transitions. [2022-12-14 08:12:47,977 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 399 transitions. Word has length 55 [2022-12-14 08:12:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:47,977 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 399 transitions. [2022-12-14 08:12:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 399 transitions. [2022-12-14 08:12:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:12:47,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:47,979 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2022-12-14 08:12:47,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:12:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 08:12:48,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1875709708, now seen corresponding path program 2 times [2022-12-14 08:12:48,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:48,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283844751] [2022-12-14 08:12:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:48,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:12:48,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283844751] [2022-12-14 08:12:48,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283844751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595151491] [2022-12-14 08:12:48,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:12:48,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:48,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:48,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:12:48,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:12:48,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:12:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:12:48,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-12-14 08:12:48,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-12-14 08:12:48,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595151491] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587401634] [2022-12-14 08:12:48,858 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:12:48,858 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:48,859 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 08:12:48,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:48,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 37 [2022-12-14 08:12:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675533732] [2022-12-14 08:12:48,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 08:12:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 08:12:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 08:12:48,861 INFO L87 Difference]: Start difference. First operand 363 states and 399 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 08:12:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:49,427 INFO L93 Difference]: Finished difference Result 720 states and 820 transitions. [2022-12-14 08:12:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 08:12:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-12-14 08:12:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:49,430 INFO L225 Difference]: With dead ends: 720 [2022-12-14 08:12:49,430 INFO L226 Difference]: Without dead ends: 664 [2022-12-14 08:12:49,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=3995, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 08:12:49,433 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 299 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:49,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 268 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:12:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-12-14 08:12:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 655. [2022-12-14 08:12:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 526 states have (on average 1.064638783269962) internal successors, (560), 521 states have internal predecessors, (560), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2022-12-14 08:12:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 694 transitions. [2022-12-14 08:12:49,451 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 694 transitions. Word has length 74 [2022-12-14 08:12:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:49,451 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 694 transitions. [2022-12-14 08:12:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 08:12:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 694 transitions. [2022-12-14 08:12:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 08:12:49,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:49,454 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-12-14 08:12:49,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:12:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:49,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1873920279, now seen corresponding path program 3 times [2022-12-14 08:12:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:49,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43613926] [2022-12-14 08:12:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 08:12:49,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:49,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43613926] [2022-12-14 08:12:49,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43613926] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:49,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510351533] [2022-12-14 08:12:49,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:12:49,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:49,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:49,956 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:49,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:12:50,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:12:50,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:12:50,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 08:12:50,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 08:12:50,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:12:51,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510351533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:51,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391152382] [2022-12-14 08:12:51,342 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:12:51,342 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:51,342 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 08:12:51,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:51,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 29] total 38 [2022-12-14 08:12:51,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458125567] [2022-12-14 08:12:51,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:51,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 08:12:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 08:12:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 08:12:51,346 INFO L87 Difference]: Start difference. First operand 655 states and 694 transitions. Second operand has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-12-14 08:12:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:51,585 INFO L93 Difference]: Finished difference Result 732 states and 770 transitions. [2022-12-14 08:12:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 08:12:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 99 [2022-12-14 08:12:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:51,588 INFO L225 Difference]: With dead ends: 732 [2022-12-14 08:12:51,588 INFO L226 Difference]: Without dead ends: 601 [2022-12-14 08:12:51,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 174 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=2188, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 08:12:51,590 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 220 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:51,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 408 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:12:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-12-14 08:12:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 565. [2022-12-14 08:12:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 454 states have (on average 1.0682819383259912) internal successors, (485), 449 states have internal predecessors, (485), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2022-12-14 08:12:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 601 transitions. [2022-12-14 08:12:51,604 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 601 transitions. Word has length 99 [2022-12-14 08:12:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:51,604 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 601 transitions. [2022-12-14 08:12:51,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-12-14 08:12:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 601 transitions. [2022-12-14 08:12:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 08:12:51,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:51,606 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-12-14 08:12:51,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:12:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 08:12:51,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1122935724, now seen corresponding path program 4 times [2022-12-14 08:12:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:51,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592838231] [2022-12-14 08:12:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:51,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:52,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:52,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592838231] [2022-12-14 08:12:52,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592838231] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:52,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620071506] [2022-12-14 08:12:52,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 08:12:52,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:52,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:52,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:52,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:12:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 08:12:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:52,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:12:54,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620071506] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:54,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371297925] [2022-12-14 08:12:54,098 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:12:54,098 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:54,098 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 08:12:54,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:54,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 97 [2022-12-14 08:12:54,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075977320] [2022-12-14 08:12:54,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:54,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-12-14 08:12:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-12-14 08:12:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2360, Invalid=7342, Unknown=0, NotChecked=0, Total=9702 [2022-12-14 08:12:54,103 INFO L87 Difference]: Start difference. First operand 565 states and 601 transitions. Second operand has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:54,508 INFO L93 Difference]: Finished difference Result 580 states and 601 transitions. [2022-12-14 08:12:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-14 08:12:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-14 08:12:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:54,510 INFO L225 Difference]: With dead ends: 580 [2022-12-14 08:12:54,510 INFO L226 Difference]: Without dead ends: 579 [2022-12-14 08:12:54,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3827, Invalid=9513, Unknown=0, NotChecked=0, Total=13340 [2022-12-14 08:12:54,513 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 438 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:54,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 566 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:12:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-12-14 08:12:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 564. [2022-12-14 08:12:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 454 states have (on average 1.066079295154185) internal successors, (484), 448 states have internal predecessors, (484), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2022-12-14 08:12:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 600 transitions. [2022-12-14 08:12:54,533 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 600 transitions. Word has length 115 [2022-12-14 08:12:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:54,533 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 600 transitions. [2022-12-14 08:12:54,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:12:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 600 transitions. [2022-12-14 08:12:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 08:12:54,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:54,535 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-12-14 08:12:54,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 08:12:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:54,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1146813196, now seen corresponding path program 4 times [2022-12-14 08:12:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153525450] [2022-12-14 08:12:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:12:54,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:54,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153525450] [2022-12-14 08:12:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153525450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074836167] [2022-12-14 08:12:54,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 08:12:54,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:54,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:54,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:54,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:12:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:54,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:12:54,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:12:54,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:12:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:12:55,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074836167] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:12:55,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [302000982] [2022-12-14 08:12:55,872 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:12:55,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:12:55,872 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 08:12:55,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:12:55,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-12-14 08:12:55,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077515121] [2022-12-14 08:12:55,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:12:55,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 08:12:55,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:12:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 08:12:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-12-14 08:12:55,874 INFO L87 Difference]: Start difference. First operand 564 states and 600 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 08:12:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:12:55,929 INFO L93 Difference]: Finished difference Result 1289 states and 1480 transitions. [2022-12-14 08:12:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 08:12:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2022-12-14 08:12:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:12:55,932 INFO L225 Difference]: With dead ends: 1289 [2022-12-14 08:12:55,933 INFO L226 Difference]: Without dead ends: 1288 [2022-12-14 08:12:55,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-12-14 08:12:55,934 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:12:55,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:12:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-12-14 08:12:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2022-12-14 08:12:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1038 states have (on average 1.0289017341040463) internal successors, (1068), 1024 states have internal predecessors, (1068), 24 states have call successors, (24), 23 states have call predecessors, (24), 225 states have return successors, (240), 240 states have call predecessors, (240), 23 states have call successors, (240) [2022-12-14 08:12:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1332 transitions. [2022-12-14 08:12:55,958 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1332 transitions. Word has length 114 [2022-12-14 08:12:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:12:55,958 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1332 transitions. [2022-12-14 08:12:55,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 08:12:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1332 transitions. [2022-12-14 08:12:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 08:12:55,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:55,960 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2022-12-14 08:12:55,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 08:12:56,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 08:12:56,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:12:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -34577036, now seen corresponding path program 5 times [2022-12-14 08:12:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:56,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058980824] [2022-12-14 08:12:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:12:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:12:56,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:12:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058980824] [2022-12-14 08:12:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058980824] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:12:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303720981] [2022-12-14 08:12:56,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:12:56,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:12:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:56,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:12:56,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 08:12:56,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-12-14 08:12:56,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:12:56,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 08:12:56,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:12:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:12:56,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:13:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 08:13:03,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303720981] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:13:03,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1795580711] [2022-12-14 08:13:03,632 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:13:03,632 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:13:03,632 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 08:13:03,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:13:03,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2022-12-14 08:13:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130902121] [2022-12-14 08:13:03,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:13:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-14 08:13:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-14 08:13:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 08:13:03,635 INFO L87 Difference]: Start difference. First operand 1288 states and 1332 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 08:13:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:03,787 INFO L93 Difference]: Finished difference Result 3097 states and 3508 transitions. [2022-12-14 08:13:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 08:13:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 154 [2022-12-14 08:13:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:03,791 INFO L225 Difference]: With dead ends: 3097 [2022-12-14 08:13:03,791 INFO L226 Difference]: Without dead ends: 1494 [2022-12-14 08:13:03,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 08:13:03,796 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:03,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:13:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-12-14 08:13:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2022-12-14 08:13:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1207 states have (on average 1.0190555095277547) internal successors, (1230), 1186 states have internal predecessors, (1230), 24 states have call successors, (24), 23 states have call predecessors, (24), 262 states have return successors, (284), 284 states have call predecessors, (284), 23 states have call successors, (284) [2022-12-14 08:13:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1538 transitions. [2022-12-14 08:13:03,831 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1538 transitions. Word has length 154 [2022-12-14 08:13:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:03,831 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1538 transitions. [2022-12-14 08:13:03,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-12-14 08:13:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1538 transitions. [2022-12-14 08:13:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-12-14 08:13:03,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:03,837 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 31, 31, 31, 31, 30, 1, 1, 1, 1] [2022-12-14 08:13:03,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 08:13:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 08:13:04,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:13:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 669926967, now seen corresponding path program 6 times [2022-12-14 08:13:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:04,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406005560] [2022-12-14 08:13:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 7263 trivial. 0 not checked. [2022-12-14 08:13:06,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406005560] [2022-12-14 08:13:06,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406005560] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:13:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971647677] [2022-12-14 08:13:06,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:13:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:13:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:13:06,117 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:13:06,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 08:13:06,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:13:06,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:13:06,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 112 conjunts are in the unsatisfiable core [2022-12-14 08:13:06,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:13:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 3648 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-12-14 08:13:09,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:14:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 5418 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-12-14 08:14:38,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971647677] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:14:38,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [31589605] [2022-12-14 08:14:38,614 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 08:14:38,614 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:14:38,614 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 08:14:38,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:14:38,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 83, 113] total 225 [2022-12-14 08:14:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162856588] [2022-12-14 08:14:38,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:14:38,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-12-14 08:14:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:14:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-12-14 08:14:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5234, Invalid=45166, Unknown=0, NotChecked=0, Total=50400 [2022-12-14 08:14:38,622 INFO L87 Difference]: Start difference. First operand 1494 states and 1538 transitions. Second operand has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-12-14 08:14:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:14:40,157 INFO L93 Difference]: Finished difference Result 1494 states and 1538 transitions. [2022-12-14 08:14:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 08:14:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 429 [2022-12-14 08:14:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:14:40,158 INFO L225 Difference]: With dead ends: 1494 [2022-12-14 08:14:40,158 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:14:40,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 665 SyntacticMatches, 31 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28749 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=8077, Invalid=53675, Unknown=0, NotChecked=0, Total=61752 [2022-12-14 08:14:40,164 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:14:40,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 08:14:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:14:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:14:40,164 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 08:14:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:14:40,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 429 [2022-12-14 08:14:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:14:40,164 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:14:40,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-12-14 08:14:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:14:40,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:14:40,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 08:14:40,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 08:14:40,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 08:14:40,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 08:14:40,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 08:14:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:14:40,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:14:40,736 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= |ULTIMATE.start_main_~input~0#1| 15) [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,736 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (<= id_~x |id_#in~x|))) (and (or (= id_~x 15) (not (<= |id_#in~x| 15)) (not (<= 15 |id_#in~x|))) (or (not (<= |id_#in~x| 1)) (and .cse0 (<= 1 id_~x)) (not (<= 1 |id_#in~x|))) (or (not (<= |id_#in~x| 0)) (not (<= 0 |id_#in~x|))) (or (not (<= 2 |id_#in~x|)) (and .cse0 (<= |id_#in~x| id_~x)) (not (<= |id_#in~x| 14))))) [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,737 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-12-14 08:14:40,740 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1, 1, 1] [2022-12-14 08:14:40,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:14:40,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:14:40 BoogieIcfgContainer [2022-12-14 08:14:40,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:14:40,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:14:40,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:14:40,745 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:14:40,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:12:42" (3/4) ... [2022-12-14 08:14:40,748 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:14:40,751 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-12-14 08:14:40,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 08:14:40,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 08:14:40,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 08:14:40,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:14:40,775 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:14:40,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:14:40,775 INFO L158 Benchmark]: Toolchain (without parser) took 118688.41ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 89.6MB in the beginning and 179.5MB in the end (delta: -89.9MB). Peak memory consumption was 95.2MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,775 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory was 88.1MB in the beginning and 88.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:14:40,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.34ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 79.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.73ms. Allocated memory is still 123.7MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,776 INFO L158 Benchmark]: Boogie Preprocessor took 11.51ms. Allocated memory is still 123.7MB. Free memory was 78.3MB in the beginning and 77.6MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:14:40,776 INFO L158 Benchmark]: RCFGBuilder took 205.45ms. Allocated memory is still 123.7MB. Free memory was 77.1MB in the beginning and 67.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,776 INFO L158 Benchmark]: TraceAbstraction took 118259.71ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 66.6MB in the beginning and 181.6MB in the end (delta: -115.0MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,777 INFO L158 Benchmark]: Witness Printer took 29.60ms. Allocated memory is still 308.3MB. Free memory was 181.6MB in the beginning and 179.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:14:40,778 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 123.7MB. Free memory was 88.1MB in the beginning and 88.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.34ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 79.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.73ms. Allocated memory is still 123.7MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.51ms. Allocated memory is still 123.7MB. Free memory was 78.3MB in the beginning and 77.6MB in the end (delta: 698.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.45ms. Allocated memory is still 123.7MB. Free memory was 77.1MB in the beginning and 67.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 118259.71ms. Allocated memory was 123.7MB in the beginning and 308.3MB in the end (delta: 184.5MB). Free memory was 66.6MB in the beginning and 181.6MB in the end (delta: -115.0MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Witness Printer took 29.60ms. Allocated memory is still 308.3MB. Free memory was 181.6MB in the beginning and 179.5MB in the end (delta: 2.1MB). 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: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: 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 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 118.2s, OverallIterations: 14, TraceHistogramMax: 55, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2496 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2471 mSDsluCounter, 2818 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2443 mSDsCounter, 611 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5235 IncrementalHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 611 mSolverCounterUnsat, 375 mSDtfsCounter, 5235 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2661 GetRequests, 1845 SyntacticMatches, 48 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37590 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=13, InterpolantAutomatonStates: 399, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 119 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 49 PreInvPairs, 49 NumberOfFragments, 58 HoareAnnotationTreeSize, 49 FomulaSimplifications, 798 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1184 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 109.4s InterpolantComputationTime, 2296 NumberOfCodeBlocks, 2246 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 3375 ConstructedInterpolants, 0 QuantifiedInterpolants, 9282 SizeOfPredicates, 117 NumberOfNonLiveVariables, 2231 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 21656/41085 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 08:14:40,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbaa57cd-1719-4ecc-b8b1-f4ff9e5e73ab/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