./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/ll_search_not_found-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/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_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/ll_search_not_found-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/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 64bit --witnessprinter.graph.data.programhash 0c385b5b6938ff41cf175461b645aab6ab3ea0ee576af757e08e06ee4b5e09c7 --- 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 14:24:18,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:24:18,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:24:18,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:24:18,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:24:18,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:24:18,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:24:18,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:24:18,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:24:18,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:24:18,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:24:18,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:24:18,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:24:18,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:24:18,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:24:18,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:24:18,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:24:18,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:24:18,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:24:18,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:24:18,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:24:18,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:24:18,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:24:18,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:24:18,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:24:18,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:24:18,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:24:18,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:24:18,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:24:18,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:24:18,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:24:18,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:24:18,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:24:18,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:24:18,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:24:18,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:24:18,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:24:18,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:24:18,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:24:18,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:24:18,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:24:18,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 14:24:18,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:24:18,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:24:18,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:24:18,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:24:18,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:24:18,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:24:18,671 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:24:18,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:24:18,672 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:24:18,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:24:18,672 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:24:18,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:24:18,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:24:18,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:24:18,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:24:18,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:24:18,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:24:18,673 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:24:18,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:24:18,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:24:18,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:24:18,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:24:18,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:24:18,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:24:18,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:24:18,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:24:18,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:24:18,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:24:18,676 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:24:18,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:24:18,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:24:18,677 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:24:18,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:24:18,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:24:18,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:24:18,677 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_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c385b5b6938ff41cf175461b645aab6ab3ea0ee576af757e08e06ee4b5e09c7 [2022-12-14 14:24:18,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:24:18,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:24:18,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:24:18,906 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:24:18,906 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:24:18,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-memory-linkedlists/ll_search_not_found-alloca.i [2022-12-14 14:24:21,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:24:21,777 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:24:21,778 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/sv-benchmarks/c/termination-memory-linkedlists/ll_search_not_found-alloca.i [2022-12-14 14:24:21,787 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/data/84a3283ac/02d14d6c493343989f72bd6b741438e2/FLAGcc7126bbc [2022-12-14 14:24:21,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/data/84a3283ac/02d14d6c493343989f72bd6b741438e2 [2022-12-14 14:24:21,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:24:21,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:24:21,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:24:21,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:24:21,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:24:21,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:24:21" (1/1) ... [2022-12-14 14:24:21,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4113d2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:21, skipping insertion in model container [2022-12-14 14:24:21,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:24:21" (1/1) ... [2022-12-14 14:24:21,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:24:21,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:24:22,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:24:22,075 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:24:22,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:24:22,128 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:24:22,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22 WrapperNode [2022-12-14 14:24:22,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:24:22,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:24:22,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:24:22,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:24:22,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,157 INFO L138 Inliner]: procedures = 114, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 14:24:22,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:24:22,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:24:22,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:24:22,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:24:22,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:24:22,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:24:22,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:24:22,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:24:22,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (1/1) ... [2022-12-14 14:24:22,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:24:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:24:22,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:24:22,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:24:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:24:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:24:22,294 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:24:22,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:24:22,388 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:24:22,426 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:24:22,426 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:24:22,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:24:22 BoogieIcfgContainer [2022-12-14 14:24:22,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:24:22,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:24:22,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:24:22,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:24:22,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:24:21" (1/3) ... [2022-12-14 14:24:22,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f83b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:24:22, skipping insertion in model container [2022-12-14 14:24:22,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:24:22" (2/3) ... [2022-12-14 14:24:22,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f83b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:24:22, skipping insertion in model container [2022-12-14 14:24:22,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:24:22" (3/3) ... [2022-12-14 14:24:22,437 INFO L112 eAbstractionObserver]: Analyzing ICFG ll_search_not_found-alloca.i [2022-12-14 14:24:22,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:24:22,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:24:22,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:24:22,498 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;@4d8c42e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:24:22,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:24:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 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 14:24:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:24:22,512 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:24:22,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:24:22,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:24:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:24:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 77451, now seen corresponding path program 1 times [2022-12-14 14:24:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:24:22,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020783381] [2022-12-14 14:24:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:24:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:24:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:24:22,688 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 14:24:22,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:24:22,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020783381] [2022-12-14 14:24:22,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020783381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:24:22,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:24:22,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:24:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620075842] [2022-12-14 14:24:22,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:24:22,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:24:22,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:24:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:24:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:24:22,719 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 14:24:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:24:22,756 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-12-14 14:24:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:24:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 14:24:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:24:22,763 INFO L225 Difference]: With dead ends: 12 [2022-12-14 14:24:22,764 INFO L226 Difference]: Without dead ends: 5 [2022-12-14 14:24:22,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:24:22,768 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:24:22,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:24:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2022-12-14 14:24:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2022-12-14 14:24:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:24:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2022-12-14 14:24:22,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2022-12-14 14:24:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:24:22,790 INFO L495 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2022-12-14 14:24:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 14:24:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2022-12-14 14:24:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:24:22,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:24:22,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:24:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:24:22,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:24:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:24:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2401027, now seen corresponding path program 1 times [2022-12-14 14:24:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:24:22,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927466663] [2022-12-14 14:24:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:24:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:24:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:24:22,843 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 14:24:22,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:24:22,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927466663] [2022-12-14 14:24:22,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927466663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:24:22,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:24:22,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:24:22,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268378109] [2022-12-14 14:24:22,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:24:22,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:24:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:24:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:24:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:24:22,846 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:24:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:24:22,867 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-12-14 14:24:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:24:22,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:24:22,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:24:22,868 INFO L225 Difference]: With dead ends: 9 [2022-12-14 14:24:22,868 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 14:24:22,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:24:22,870 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:24:22,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:24:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 14:24:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 14:24:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 14:24:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 14:24:22,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-12-14 14:24:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:24:22,874 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 14:24:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:24:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 14:24:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:24:22,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:24:22,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-12-14 14:24:22,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:24:22,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:24:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:24:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1485371346, now seen corresponding path program 1 times [2022-12-14 14:24:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:24:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731141955] [2022-12-14 14:24:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:24:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:24:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:24:22,985 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 14:24:22,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:24:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731141955] [2022-12-14 14:24:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731141955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:24:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173593488] [2022-12-14 14:24:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:24:22,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:24:22,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:24:22,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:24:22,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:24:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:24:23,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:24:23,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:24:23,103 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 14:24:23,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:24:23,145 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 14:24:23,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173593488] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:24:23,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1731284925] [2022-12-14 14:24:23,161 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 14:24:23,162 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:24:23,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:24:23,175 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:24:23,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:24:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:23,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 14:24:23,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:24:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 14:24:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-12-14 14:24:23,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 14:24:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 14:24:23,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 14:24:23,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2022-12-14 14:24:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,650 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:24:23,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 196 [2022-12-14 14:24:23,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,706 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 14:24:23,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 242 treesize of output 205 [2022-12-14 14:24:23,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,762 INFO L321 Elim1Store]: treesize reduction 64, result has 24.7 percent of original size [2022-12-14 14:24:23,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 263 treesize of output 250 [2022-12-14 14:24:23,814 INFO L321 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-12-14 14:24:23,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 252 treesize of output 254 [2022-12-14 14:24:23,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:23,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,840 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 14:24:23,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 241 [2022-12-14 14:24:23,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:23,875 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 14:24:23,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 250 [2022-12-14 14:24:23,913 INFO L321 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-12-14 14:24:23,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 262 [2022-12-14 14:24:24,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:24,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 14:24:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:24,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:24,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:24,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:24:24,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:24:24,063 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:24:24,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '114#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_init_ll_#in~n#1|) (<= 0 |ULTIMATE.start_init_ll_~head~0#1.offset|) (< 2147483646 |ULTIMATE.start_init_ll_#t~post2#1|) (<= 0 |ULTIMATE.start_init_ll_~curr~0#1.offset|) (<= |ULTIMATE.start_init_ll_#in~n#1| 2147483647) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_init_ll_~head~0#1.offset| 0) (<= |ULTIMATE.start_init_ll_~curr~0#1.offset| 0) (<= 0 |ULTIMATE.start_init_ll_~i~0#1|) (<= |ULTIMATE.start_init_ll_~n#1| 2147483647) (<= 0 |ULTIMATE.start_init_ll_~n#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:24:24,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:24:24,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:24:24,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 14:24:24,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972753937] [2022-12-14 14:24:24,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:24:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 14:24:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:24:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 14:24:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:24:24,331 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 14:24:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:24:24,396 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-12-14 14:24:24,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 14:24:24,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:24:24,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:24:24,397 INFO L225 Difference]: With dead ends: 18 [2022-12-14 14:24:24,397 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:24:24,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:24:24,398 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:24:24,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:24:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:24:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 14:24:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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 14:24:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 14:24:24,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-12-14 14:24:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:24:24,402 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 14:24:24,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 14:24:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 14:24:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:24:24,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:24:24,403 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2022-12-14 14:24:24,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:24:24,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:24:24,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:24:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:24:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1515855037, now seen corresponding path program 2 times [2022-12-14 14:24:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:24:24,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944615492] [2022-12-14 14:24:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:24:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:24:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:24:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:24:24,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:24:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944615492] [2022-12-14 14:24:24,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944615492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:24:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716775012] [2022-12-14 14:24:24,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:24:24,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:24:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:24:24,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:24:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:24:24,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:24:24,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:24:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:24:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:24:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:24:25,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:24:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:24:25,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716775012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:24:25,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [413226310] [2022-12-14 14:24:25,036 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 14:24:25,036 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:24:25,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:24:25,037 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:24:25,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:24:25,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:24:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:25,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 14:24:25,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 14:24:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-12-14 14:24:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 14:24:25,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-12-14 14:24:25,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 14:24:25,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-14 14:24:25,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,306 INFO L321 Elim1Store]: treesize reduction 64, result has 24.7 percent of original size [2022-12-14 14:24:25,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 245 [2022-12-14 14:24:25,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,328 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:24:25,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 267 treesize of output 219 [2022-12-14 14:24:25,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,364 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 14:24:25,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 228 [2022-12-14 14:24:25,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,382 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 14:24:25,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 264 [2022-12-14 14:24:25,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:24:25,415 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 14:24:25,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 277 treesize of output 273 [2022-12-14 14:24:25,449 INFO L321 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-12-14 14:24:25,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 287 treesize of output 289 [2022-12-14 14:24:25,480 INFO L321 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-12-14 14:24:25,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 282 treesize of output 285 [2022-12-14 14:24:25,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:25,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:24:25,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 14:24:25,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:24:25,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 14:24:25,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:24:25,613 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:24:25,835 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '274#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_init_ll_#in~n#1|) (<= 0 |ULTIMATE.start_init_ll_~head~0#1.offset|) (< 2147483646 |ULTIMATE.start_init_ll_#t~post2#1|) (<= |ULTIMATE.start_init_ll_#in~n#1| 2147483647) (<= |ULTIMATE.start_init_ll_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_init_ll_~i~0#1|) (<= |ULTIMATE.start_init_ll_~n#1| 2147483647) (= |ULTIMATE.start_init_ll_~curr~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_ll_~n#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:24:25,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:24:25,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:24:25,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2022-12-14 14:24:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599256160] [2022-12-14 14:24:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:24:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 14:24:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:24:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 14:24:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:24:25,837 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 14:24:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:24:25,979 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-12-14 14:24:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 14:24:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 14:24:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:24:25,979 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:24:25,979 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:24:25,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-12-14 14:24:25,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:24:25,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:24:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:24:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:24:25,981 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 14:24:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:24:25,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-12-14 14:24:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:24:25,981 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:24:25,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 14:24:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:24:25,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:24:25,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:24:25,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:24:25,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:24:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:24:26,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 14:24:26,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-12-14 14:24:26,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 14:24:26,282 INFO L895 garLoopResultBuilder]: At program point L558(lines 558 564) the Hoare annotation is: (<= 0 |ULTIMATE.start_init_ll_~i~0#1|) [2022-12-14 14:24:26,282 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 14:24:26,282 INFO L899 garLoopResultBuilder]: For program point L550-3(line 550) no Hoare annotation was computed. [2022-12-14 14:24:26,283 INFO L899 garLoopResultBuilder]: For program point L550-4(line 550) no Hoare annotation was computed. [2022-12-14 14:24:26,283 INFO L895 garLoopResultBuilder]: At program point L550-5(lines 550 555) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_init_ll_~i~0#1|) (<= |ULTIMATE.start_init_ll_~n#1| 2147483647)) [2022-12-14 14:24:26,284 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 550) no Hoare annotation was computed. [2022-12-14 14:24:26,284 INFO L899 garLoopResultBuilder]: For program point L561-3(lines 561 563) no Hoare annotation was computed. [2022-12-14 14:24:26,284 INFO L895 garLoopResultBuilder]: At program point L561-5(lines 561 563) the Hoare annotation is: (<= 0 |ULTIMATE.start_init_ll_~i~0#1|) [2022-12-14 14:24:26,292 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-14 14:24:26,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:24:26,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:24:26 BoogieIcfgContainer [2022-12-14 14:24:26,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:24:26,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:24:26,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:24:26,315 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:24:26,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:24:22" (3/4) ... [2022-12-14 14:24:26,318 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:24:26,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-14 14:24:26,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 14:24:26,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 14:24:26,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:24:26,346 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:24:26,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:24:26,346 INFO L158 Benchmark]: Toolchain (without parser) took 4543.15ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 89.3MB in the beginning and 58.4MB in the end (delta: 30.9MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.04ms. Allocated memory is still 123.7MB. Free memory was 89.0MB in the beginning and 73.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.14ms. Allocated memory is still 123.7MB. Free memory was 73.3MB in the beginning and 71.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: Boogie Preprocessor took 16.06ms. Allocated memory is still 123.7MB. Free memory was 71.3MB in the beginning and 70.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: RCFGBuilder took 253.49ms. Allocated memory is still 123.7MB. Free memory was 70.2MB in the beginning and 56.7MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 14:24:26,347 INFO L158 Benchmark]: TraceAbstraction took 3884.31ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 61.6MB in the end (delta: -5.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-12-14 14:24:26,348 INFO L158 Benchmark]: Witness Printer took 31.01ms. Allocated memory is still 148.9MB. Free memory was 61.6MB in the beginning and 58.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:24:26,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.04ms. Allocated memory is still 123.7MB. Free memory was 89.0MB in the beginning and 73.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.14ms. Allocated memory is still 123.7MB. Free memory was 73.3MB in the beginning and 71.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.06ms. Allocated memory is still 123.7MB. Free memory was 71.3MB in the beginning and 70.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 253.49ms. Allocated memory is still 123.7MB. Free memory was 70.2MB in the beginning and 56.7MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3884.31ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 55.9MB in the beginning and 61.6MB in the end (delta: -5.7MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 31.01ms. Allocated memory is still 148.9MB. Free memory was 61.6MB in the beginning and 58.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 550]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 550]: 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 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 4 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 7 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 44/99 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 2 specifications checked. All of them hold - InvariantResult [Line: 550]: Loop Invariant Derived loop invariant: 0 <= i && n <= 2147483647 - InvariantResult [Line: 558]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 561]: Loop Invariant Derived loop invariant: 0 <= i RESULT: Ultimate proved your program to be correct! [2022-12-14 14:24:26,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073a2ea8-90e3-4d5b-b06b-af6bd8b6e5a1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE