./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/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_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:47:03,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:47:03,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:47:03,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:47:03,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:47:03,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:47:03,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:47:03,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:47:03,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:47:03,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:47:03,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:47:03,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:47:03,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:47:03,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:47:03,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:47:03,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:47:03,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:47:03,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:47:03,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:47:03,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:47:03,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:47:03,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:47:03,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:47:03,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:47:03,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:47:03,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:47:03,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:47:03,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:47:03,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:47:03,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:47:03,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:47:03,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:47:03,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:47:03,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:47:03,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:47:03,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:47:03,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:47:03,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:47:03,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:47:03,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:47:03,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:47:03,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:47:03,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:47:03,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:47:03,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:47:03,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:47:03,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:47:03,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:47:03,986 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:47:03,987 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:47:03,987 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:47:03,987 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:47:03,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:47:03,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:47:03,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:47:03,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:47:03,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:47:03,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:47:03,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:47:03,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:47:03,989 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_4c8b0f7a-de17-4719-b142-f506fe833fb7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2022-12-14 08:47:04,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:47:04,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:47:04,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:47:04,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:47:04,199 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:47:04,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2022-12-14 08:47:06,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:47:06,937 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:47:06,937 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2022-12-14 08:47:06,942 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/data/ae138001a/7a49c9d54d0e4d58a564577e56262368/FLAG0facce217 [2022-12-14 08:47:06,952 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/data/ae138001a/7a49c9d54d0e4d58a564577e56262368 [2022-12-14 08:47:06,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:47:06,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:47:06,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:47:06,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:47:06,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:47:06,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:47:06" (1/1) ... [2022-12-14 08:47:06,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41823ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:06, skipping insertion in model container [2022-12-14 08:47:06,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:47:06" (1/1) ... [2022-12-14 08:47:06,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:47:06,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:47:07,073 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2022-12-14 08:47:07,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:47:07,099 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:47:07,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2022-12-14 08:47:07,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:47:07,125 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:47:07,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07 WrapperNode [2022-12-14 08:47:07,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:47:07,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:47:07,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:47:07,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:47:07,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,150 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-14 08:47:07,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:47:07,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:47:07,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:47:07,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:47:07,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:47:07,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:47:07,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:47:07,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:47:07,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (1/1) ... [2022-12-14 08:47:07,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:47:07,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:07,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:47:07,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:47:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:47:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:47:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:47:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:47:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:47:07,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:47:07,278 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:47:07,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:47:07,433 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:47:07,463 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:47:07,463 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:47:07,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:47:07 BoogieIcfgContainer [2022-12-14 08:47:07,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:47:07,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:47:07,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:47:07,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:47:07,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:47:06" (1/3) ... [2022-12-14 08:47:07,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136ea813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:47:07, skipping insertion in model container [2022-12-14 08:47:07,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:47:07" (2/3) ... [2022-12-14 08:47:07,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136ea813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:47:07, skipping insertion in model container [2022-12-14 08:47:07,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:47:07" (3/3) ... [2022-12-14 08:47:07,472 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2022-12-14 08:47:07,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:47:07,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:47:07,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:47:07,527 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;@30f81eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:47:07,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:47:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 08:47:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:47:07,536 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:07,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:07,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2022-12-14 08:47:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:07,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077893740] [2022-12-14 08:47:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:07,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077893740] [2022-12-14 08:47:07,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 08:47:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898421417] [2022-12-14 08:47:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:07,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:07,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:07,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:47:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:07,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 08:47:07,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:07,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:47:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898421417] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:07,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:07,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:47:07,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309623094] [2022-12-14 08:47:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:47:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:47:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:47:07,734 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:07,762 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2022-12-14 08:47:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:47:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 08:47:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:07,770 INFO L225 Difference]: With dead ends: 44 [2022-12-14 08:47:07,770 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 08:47:07,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:47:07,775 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:07,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 08:47:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 08:47:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:47:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2022-12-14 08:47:07,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2022-12-14 08:47:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:07,806 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2022-12-14 08:47:07,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2022-12-14 08:47:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 08:47:07,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:07,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:07,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:47:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 08:47:08,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:08,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:08,009 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2022-12-14 08:47:08,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:08,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190248218] [2022-12-14 08:47:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:08,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190248218] [2022-12-14 08:47:08,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 08:47:08,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596100569] [2022-12-14 08:47:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:08,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:08,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:47:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:08,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:47:08,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:08,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:47:08,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596100569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:08,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:08,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:47:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034181557] [2022-12-14 08:47:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:08,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:47:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:47:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:47:08,125 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:08,151 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2022-12-14 08:47:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:47:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 08:47:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:08,153 INFO L225 Difference]: With dead ends: 42 [2022-12-14 08:47:08,153 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 08:47:08,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:47:08,155 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:08,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:08,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 08:47:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 08:47:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:47:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2022-12-14 08:47:08,164 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2022-12-14 08:47:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:08,164 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2022-12-14 08:47:08,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2022-12-14 08:47:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:47:08,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:08,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:08,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:47:08,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:08,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2022-12-14 08:47:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:08,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256927521] [2022-12-14 08:47:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:08,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:47:08,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913105985] [2022-12-14 08:47:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:08,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:08,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:08,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:08,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:47:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:08,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:47:08,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:08,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:47:08,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:08,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256927521] [2022-12-14 08:47:08,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:47:08,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913105985] [2022-12-14 08:47:08,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913105985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:08,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:08,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:47:08,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957242603] [2022-12-14 08:47:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:08,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:47:08,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:08,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:47:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:47:08,522 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:08,549 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-12-14 08:47:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:47:08,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 08:47:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:08,550 INFO L225 Difference]: With dead ends: 37 [2022-12-14 08:47:08,550 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 08:47:08,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:47:08,551 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:08,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 08:47:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-12-14 08:47:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 08:47:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2022-12-14 08:47:08,556 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2022-12-14 08:47:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:08,556 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2022-12-14 08:47:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2022-12-14 08:47:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:47:08,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:08,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:08,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:47:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:08,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2022-12-14 08:47:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:08,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083004759] [2022-12-14 08:47:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:09,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:09,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083004759] [2022-12-14 08:47:09,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083004759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:09,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:09,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:47:09,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236363429] [2022-12-14 08:47:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:09,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:47:09,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:47:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:47:09,098 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:11,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:47:13,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:47:15,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:47:17,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 08:47:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:18,207 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2022-12-14 08:47:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:47:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 08:47:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:18,208 INFO L225 Difference]: With dead ends: 59 [2022-12-14 08:47:18,208 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 08:47:18,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:47:18,209 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:18,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 107 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 91 Invalid, 4 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 08:47:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 08:47:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 08:47:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 08:47:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-12-14 08:47:18,219 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 10 [2022-12-14 08:47:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:18,219 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-12-14 08:47:18,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2022-12-14 08:47:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:47:18,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:18,220 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:47:18,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2022-12-14 08:47:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:18,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518528751] [2022-12-14 08:47:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:18,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:47:18,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931494319] [2022-12-14 08:47:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:18,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:18,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:47:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:18,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:47:18,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:18,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:47:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:18,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518528751] [2022-12-14 08:47:18,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:47:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931494319] [2022-12-14 08:47:18,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931494319] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:47:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1357285119] [2022-12-14 08:47:18,324 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 08:47:18,325 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:47:18,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:47:18,334 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:47:18,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:47:18,543 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2022-12-14 08:47:18,548 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:47:18,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1357285119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:18,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:47:18,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 12 [2022-12-14 08:47:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171522694] [2022-12-14 08:47:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:18,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 08:47:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 08:47:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:47:18,722 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:19,198 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2022-12-14 08:47:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 08:47:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 08:47:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:19,200 INFO L225 Difference]: With dead ends: 78 [2022-12-14 08:47:19,200 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 08:47:19,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:47:19,201 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:19,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 122 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:47:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 08:47:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2022-12-14 08:47:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 08:47:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2022-12-14 08:47:19,211 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 12 [2022-12-14 08:47:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:19,212 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2022-12-14 08:47:19,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2022-12-14 08:47:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:47:19,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:19,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:19,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:47:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:19,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:19,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2022-12-14 08:47:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:19,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186283233] [2022-12-14 08:47:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:19,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:19,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:47:19,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745674365] [2022-12-14 08:47:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:19,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:19,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:19,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:47:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:47:19,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:47:19,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:47:19,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:19,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186283233] [2022-12-14 08:47:19,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:47:19,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745674365] [2022-12-14 08:47:19,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745674365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:19,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:19,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:47:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392479345] [2022-12-14 08:47:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:47:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:47:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:47:19,638 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:20,311 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2022-12-14 08:47:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:47:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 08:47:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:20,313 INFO L225 Difference]: With dead ends: 69 [2022-12-14 08:47:20,313 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 08:47:20,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:47:20,314 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:20,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 99 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:47:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 08:47:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-12-14 08:47:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.28) internal successors, (32), 28 states have internal predecessors, (32), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 08:47:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2022-12-14 08:47:20,321 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 13 [2022-12-14 08:47:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:20,322 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2022-12-14 08:47:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2022-12-14 08:47:20,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:47:20,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:20,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:20,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:47:20,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 08:47:20,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2022-12-14 08:47:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384608753] [2022-12-14 08:47:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:20,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:20,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384608753] [2022-12-14 08:47:20,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384608753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:47:20,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2691717] [2022-12-14 08:47:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:20,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:20,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:20,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:20,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:47:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:20,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:47:20,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:20,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:47:20,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2691717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:20,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:47:20,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-12-14 08:47:20,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494925377] [2022-12-14 08:47:20,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:20,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:47:20,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:47:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 08:47:20,656 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:20,679 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2022-12-14 08:47:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:47:20,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 08:47:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:20,681 INFO L225 Difference]: With dead ends: 60 [2022-12-14 08:47:20,681 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 08:47:20,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:47:20,683 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:20,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 08:47:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-12-14 08:47:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:47:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-12-14 08:47:20,688 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2022-12-14 08:47:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:20,688 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-12-14 08:47:20,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-12-14 08:47:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 08:47:20,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:20,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:20,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:47:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:20,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1700427874, now seen corresponding path program 1 times [2022-12-14 08:47:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856447132] [2022-12-14 08:47:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:20,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:47:20,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580830126] [2022-12-14 08:47:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:20,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:20,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:20,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:20,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:47:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:20,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:47:21,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:47:21,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:47:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:47:21,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856447132] [2022-12-14 08:47:21,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:47:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580830126] [2022-12-14 08:47:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580830126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:47:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698879154] [2022-12-14 08:47:21,033 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 08:47:21,033 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:47:21,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:47:21,033 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:47:21,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:47:21,150 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2022-12-14 08:47:21,204 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:47:21,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1340#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 4 ~counter~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:47:21,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:47:21,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:47:21,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-12-14 08:47:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391396669] [2022-12-14 08:47:21,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 08:47:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:47:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:47:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:47:21,558 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:47:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:21,579 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-12-14 08:47:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:47:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-12-14 08:47:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:21,580 INFO L225 Difference]: With dead ends: 33 [2022-12-14 08:47:21,580 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 08:47:21,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-14 08:47:21,581 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:21,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 08:47:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 08:47:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:47:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-12-14 08:47:21,586 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2022-12-14 08:47:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:21,586 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-12-14 08:47:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 08:47:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-12-14 08:47:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 08:47:21,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:21,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:21,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:47:21,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 08:47:21,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1856396652, now seen corresponding path program 1 times [2022-12-14 08:47:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:21,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265622775] [2022-12-14 08:47:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:21,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:21,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:47:21,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144203698] [2022-12-14 08:47:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:21,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:47:21,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:47:21,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:47:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:47:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:47:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 08:47:22,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:47:32,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265622775] [2022-12-14 08:47:32,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 08:47:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144203698] [2022-12-14 08:47:32,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144203698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:47:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1734356793] [2022-12-14 08:47:32,948 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 08:47:32,948 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:47:32,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:47:32,948 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:47:32,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:47:33,109 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2022-12-14 08:47:33,182 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:47:33,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1503#(and (< ~counter~0 4) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 3 ~counter~0) (= |#NULL.base| 0))' at error location [2022-12-14 08:47:33,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:47:33,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:47:33,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-12-14 08:47:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714502916] [2022-12-14 08:47:33,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 08:47:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:47:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:47:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=317, Unknown=3, NotChecked=0, Total=380 [2022-12-14 08:47:33,616 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:47:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:33,670 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-12-14 08:47:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:47:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 08:47:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:33,671 INFO L225 Difference]: With dead ends: 21 [2022-12-14 08:47:33,671 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:47:33,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=75, Invalid=384, Unknown=3, NotChecked=0, Total=462 [2022-12-14 08:47:33,672 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:33,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:47:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:47:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:47:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:47:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:47:33,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-12-14 08:47:33,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:33,673 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:47:33,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:47:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:47:33,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:47:33,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:47:33,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 08:47:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:47:33,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:47:34,502 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2022-12-14 08:47:34,503 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 38 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and (<= 2 ~counter~0) .cse0 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1073741823) .cse1 .cse2) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) .cse1 (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) .cse2 (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)))) [2022-12-14 08:47:34,503 INFO L899 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed. [2022-12-14 08:47:34,503 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,503 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and (<= 2 ~counter~0) .cse0 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1073741823) (= |ULTIMATE.start_main_~h~0#1| 0) .cse1) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1))) [2022-12-14 08:47:34,503 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,503 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:47:34,503 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0))) (or (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and .cse0 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1073741823) .cse1) (and .cse0 .cse1 (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |#NULL.offset| 0) (<= 4 ~counter~0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)))) [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,504 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:47:34,504 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and (<= 2 ~counter~0) .cse0 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1073741823) .cse1 .cse2) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) .cse2 (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)))) [2022-12-14 08:47:34,504 INFO L899 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1073741823)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse4 (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse5 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse8 (<= 0 |#StackHeapBarrier|)) (.cse9 (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse10 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (<= 1 ~counter~0) .cse3 .cse4 .cse5 .cse6 .cse7 (< ~counter~0 3) .cse8 .cse9 .cse10) (and .cse0 .cse1 (<= 0 ~counter~0) .cse2 (<= ~counter~0 0) (= |ULTIMATE.start_main_~q~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) [2022-12-14 08:47:34,504 INFO L902 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: true [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,504 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) (<= 0 ~counter~0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0)) [2022-12-14 08:47:34,504 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-12-14 08:47:34,505 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-12-14 08:47:34,505 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-12-14 08:47:34,505 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-12-14 08:47:34,505 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2022-12-14 08:47:34,505 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-12-14 08:47:34,507 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:34,509 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:47:34,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:47:34 BoogieIcfgContainer [2022-12-14 08:47:34,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:47:34,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:47:34,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:47:34,522 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:47:34,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:47:07" (3/4) ... [2022-12-14 08:47:34,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:47:34,528 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 08:47:34,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 08:47:34,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 08:47:34,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 08:47:34,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:47:34,547 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((p == 0 && n % 4294967296 < 1073741823) && h == 0) && 1 <= counter) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && counter < 3) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) || (((((((((((((p == 0 && n % 4294967296 < 1073741823) && 0 <= counter) && h == 0) && counter <= 0) && q == 1) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) [2022-12-14 08:47:34,548 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((2 <= counter && p == 0) && n % 4294967296 < 1073741823) && h == 0) && n == r) || ((((((((((((p == 0 && q / 4294967296 * 4294967296 + r + (q + 2 * p) / 4294967296 * 4294967296 + 1 <= q + r / 4294967296 * 4294967296) && h == 0) && 1 <= counter) && q == 1) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) [2022-12-14 08:47:34,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:47:34,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:47:34,556 INFO L158 Benchmark]: Toolchain (without parser) took 27602.04ms. Allocated memory is still 161.5MB. Free memory was 134.2MB in the beginning and 57.2MB in the end (delta: 77.0MB). Peak memory consumption was 78.1MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,557 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:47:34,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.75ms. Allocated memory is still 161.5MB. Free memory was 133.5MB in the beginning and 122.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.22ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 120.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,557 INFO L158 Benchmark]: Boogie Preprocessor took 16.50ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 119.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:47:34,558 INFO L158 Benchmark]: RCFGBuilder took 297.10ms. Allocated memory is still 161.5MB. Free memory was 119.6MB in the beginning and 102.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,558 INFO L158 Benchmark]: TraceAbstraction took 27054.31ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 60.4MB in the end (delta: 41.7MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,558 INFO L158 Benchmark]: Witness Printer took 34.51ms. Allocated memory is still 161.5MB. Free memory was 60.4MB in the beginning and 57.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:47:34,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.75ms. Allocated memory is still 161.5MB. Free memory was 133.5MB in the beginning and 122.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.22ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 120.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.50ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 119.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.10ms. Allocated memory is still 161.5MB. Free memory was 119.6MB in the beginning and 102.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27054.31ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 60.4MB in the end (delta: 41.7MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * Witness Printer took 34.51ms. Allocated memory is still 161.5MB. Free memory was 60.4MB in the beginning and 57.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 663 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 435 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 383 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 228 mSDtfsCounter, 383 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 83 PreInvPairs, 101 NumberOfFragments, 757 HoareAnnotationTreeSize, 83 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 411 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 532 SizeOfPredicates, 11 NumberOfNonLiveVariables, 526 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 15/26 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: OVERALL_TIME: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 17, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 1, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME: 0.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 36, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 63, DAG_COMPRESSION_RETAINED_NODES: 35, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((2 <= counter && p == 0) && n % 4294967296 < 1073741823) && h == 0) && n == r) || ((((((((((((p == 0 && q / 4294967296 * 4294967296 + r + (q + 2 * p) / 4294967296 * 4294967296 + 1 <= q + r / 4294967296 * 4294967296) && h == 0) && 1 <= counter) && q == 1) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((((((((p == 0 && n % 4294967296 < 1073741823) && h == 0) && 1 <= counter) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && counter < 3) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) || (((((((((((((p == 0 && n % 4294967296 < 1073741823) && 0 <= counter) && h == 0) && counter <= 0) && q == 1) && 0 <= \old(cond)) && 0 <= cond) && n == r) && #NULL == 0) && \old(cond) <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && cond <= 1) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 08:47:34,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c8b0f7a-de17-4719-b142-f506fe833fb7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE