./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur --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 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 --- 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-38b53e6 [2022-11-26 00:57:28,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:57:28,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:57:28,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:57:28,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:57:28,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:57:28,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:57:28,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:57:28,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:57:28,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:57:28,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:57:28,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:57:28,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:57:28,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:57:28,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:57:28,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:57:28,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:57:28,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:57:28,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:57:28,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:57:28,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:57:28,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:57:28,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:57:28,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:57:28,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:57:28,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:57:28,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:57:28,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:57:28,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:57:28,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:57:28,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:57:28,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:57:28,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:57:28,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:57:28,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:57:28,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:57:28,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:57:28,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:57:28,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:57:28,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:57:28,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:57:28,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:57:28,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:57:28,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:57:28,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:57:28,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:57:28,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:57:28,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:57:28,137 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:57:28,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:57:28,137 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:57:28,138 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:57:28,138 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:57:28,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:57:28,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:57:28,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:57:28,139 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:57:28,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:57:28,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:57:28,140 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:57:28,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:57:28,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:57:28,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:57:28,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:57:28,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:57:28,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:57:28,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:57:28,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:57:28,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:57:28,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:57:28,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:57:28,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:57:28,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:57:28,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:57:28,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:57:28,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:57:28,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:57:28,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:57:28,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:57:28,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:57:28,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:57:28,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:57:28,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:57:28,146 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_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 [2022-11-26 00:57:28,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:57:28,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:57:28,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:57:28,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:57:28,470 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:57:28,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-11-26 00:57:31,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:57:31,947 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:57:31,948 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-11-26 00:57:31,960 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/data/263b08ad1/95aa66b3f34f478b9a2aa749bee5b352/FLAGd759b841a [2022-11-26 00:57:31,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/data/263b08ad1/95aa66b3f34f478b9a2aa749bee5b352 [2022-11-26 00:57:31,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:57:31,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:57:31,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:57:31,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:57:32,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:57:32,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:57:31" (1/1) ... [2022-11-26 00:57:32,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47140ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32, skipping insertion in model container [2022-11-26 00:57:32,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:57:31" (1/1) ... [2022-11-26 00:57:32,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:57:32,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:57:32,170 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_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-11-26 00:57:32,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:57:32,195 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:57:32,204 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_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-11-26 00:57:32,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:57:32,221 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:57:32,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32 WrapperNode [2022-11-26 00:57:32,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:57:32,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:57:32,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:57:32,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:57:32,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,267 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-26 00:57:32,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:57:32,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:57:32,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:57:32,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:57:32,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:57:32,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:57:32,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:57:32,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:57:32,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (1/1) ... [2022-11-26 00:57:32,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:57:32,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:32,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:57:32,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:57:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:57:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:57:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:57:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:57:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:57:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:57:32,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:57:32,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:57:32,634 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:57:32,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:57:32,656 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:57:32,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:57:32 BoogieIcfgContainer [2022-11-26 00:57:32,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:57:32,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:57:32,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:57:32,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:57:32,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:57:31" (1/3) ... [2022-11-26 00:57:32,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1369d49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:57:32, skipping insertion in model container [2022-11-26 00:57:32,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:57:32" (2/3) ... [2022-11-26 00:57:32,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1369d49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:57:32, skipping insertion in model container [2022-11-26 00:57:32,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:57:32" (3/3) ... [2022-11-26 00:57:32,688 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-2.c [2022-11-26 00:57:32,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:57:32,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:57:32,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:57:32,834 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;@42de3967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:57:32,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:57:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:57:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:57:32,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:32,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:57:32,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1481844777, now seen corresponding path program 1 times [2022-11-26 00:57:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:32,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794956095] [2022-11-26 00:57:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:33,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:33,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794956095] [2022-11-26 00:57:33,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794956095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:57:33,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:57:33,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:57:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186014049] [2022-11-26 00:57:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:57:33,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:57:33,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:57:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,228 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-26 00:57:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:33,321 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2022-11-26 00:57:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:57:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2022-11-26 00:57:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:33,331 INFO L225 Difference]: With dead ends: 40 [2022-11-26 00:57:33,331 INFO L226 Difference]: Without dead ends: 22 [2022-11-26 00:57:33,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,338 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:33,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:57:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-26 00:57:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2022-11-26 00:57:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-26 00:57:33,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2022-11-26 00:57:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:33,378 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-26 00:57:33,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-26 00:57:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-26 00:57:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:57:33,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:33,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:33,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:57:33,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:33,381 INFO L85 PathProgramCache]: Analyzing trace with hash -317560400, now seen corresponding path program 1 times [2022-11-26 00:57:33,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:33,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817784856] [2022-11-26 00:57:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:33,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:33,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:33,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817784856] [2022-11-26 00:57:33,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817784856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:57:33,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:57:33,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:57:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251403046] [2022-11-26 00:57:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:57:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:57:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:57:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,487 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-26 00:57:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:33,527 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-11-26 00:57:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:57:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2022-11-26 00:57:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:33,529 INFO L225 Difference]: With dead ends: 34 [2022-11-26 00:57:33,529 INFO L226 Difference]: Without dead ends: 20 [2022-11-26 00:57:33,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,531 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:33,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:57:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-26 00:57:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-11-26 00:57:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-26 00:57:33,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2022-11-26 00:57:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:33,539 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-26 00:57:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-26 00:57:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-26 00:57:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:57:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:33,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:57:33,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1616784915, now seen corresponding path program 1 times [2022-11-26 00:57:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:33,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129806683] [2022-11-26 00:57:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:33,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:33,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129806683] [2022-11-26 00:57:33,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129806683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:57:33,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:57:33,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:57:33,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090832743] [2022-11-26 00:57:33,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:57:33,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:57:33,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:57:33,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,709 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:57:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:33,728 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-11-26 00:57:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:57:33,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-11-26 00:57:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:33,730 INFO L225 Difference]: With dead ends: 34 [2022-11-26 00:57:33,730 INFO L226 Difference]: Without dead ends: 19 [2022-11-26 00:57:33,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:33,732 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:33,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:57:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-26 00:57:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-26 00:57:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-26 00:57:33,740 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2022-11-26 00:57:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:33,740 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-26 00:57:33,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:57:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-26 00:57:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:57:33,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:33,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:33,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:57:33,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1740086088, now seen corresponding path program 1 times [2022-11-26 00:57:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:33,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444127991] [2022-11-26 00:57:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:33,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:33,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444127991] [2022-11-26 00:57:33,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444127991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:33,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410265870] [2022-11-26 00:57:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:33,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:33,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:33,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:33,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:57:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:33,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:57:33,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:34,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:34,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410265870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:34,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1334010326] [2022-11-26 00:57:34,124 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:57:34,124 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:34,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:34,137 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:34,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:34,439 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-26 00:57:34,486 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:34,746 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '328#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:34,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:34,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:34,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-26 00:57:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318648199] [2022-11-26 00:57:34,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:57:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:57:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:57:34,754 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-11-26 00:57:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:34,840 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-11-26 00:57:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:57:34,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 [2022-11-26 00:57:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:34,842 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:57:34,842 INFO L226 Difference]: Without dead ends: 22 [2022-11-26 00:57:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:57:34,843 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:57:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-26 00:57:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-26 00:57:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-26 00:57:34,853 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 9 [2022-11-26 00:57:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-26 00:57:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2022-11-26 00:57:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-26 00:57:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:57:34,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:34,855 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:34,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:35,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash 569004883, now seen corresponding path program 2 times [2022-11-26 00:57:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:35,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620511255] [2022-11-26 00:57:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:35,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:35,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620511255] [2022-11-26 00:57:35,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620511255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:35,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614415614] [2022-11-26 00:57:35,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:57:35,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:35,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:35,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:57:35,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:57:35,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:57:35,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:57:35,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:35,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:35,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614415614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [791517731] [2022-11-26 00:57:35,525 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:57:35,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:35,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:35,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:35,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:35,644 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-26 00:57:35,679 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:35,984 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '510#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:35,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:35,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:35,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-26 00:57:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027225854] [2022-11-26 00:57:35,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:57:35,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:57:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:57:35,986 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2022-11-26 00:57:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:36,496 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-11-26 00:57:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:57:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 [2022-11-26 00:57:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:36,497 INFO L225 Difference]: With dead ends: 47 [2022-11-26 00:57:36,497 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 00:57:36,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:57:36,499 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:36,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 90 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:57:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 00:57:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-26 00:57:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-26 00:57:36,505 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 12 [2022-11-26 00:57:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:36,506 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-26 00:57:36,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2022-11-26 00:57:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-26 00:57:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:57:36,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:36,506 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:36,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:36,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:36,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1018241229, now seen corresponding path program 3 times [2022-11-26 00:57:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:36,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963473186] [2022-11-26 00:57:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:37,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:37,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963473186] [2022-11-26 00:57:37,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963473186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483563021] [2022-11-26 00:57:37,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:57:37,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:37,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:37,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:37,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:57:37,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:57:37,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:57:37,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:57:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:37,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:37,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483563021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:37,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [328028573] [2022-11-26 00:57:37,569 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:57:37,569 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:37,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:37,570 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:37,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:37,669 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-26 00:57:37,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:38,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '776#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:38,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:38,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:38,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-26 00:57:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662543161] [2022-11-26 00:57:38,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:57:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:57:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2022-11-26 00:57:38,106 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2022-11-26 00:57:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:44,231 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-11-26 00:57:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 00:57:44,232 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 18 [2022-11-26 00:57:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:44,233 INFO L225 Difference]: With dead ends: 65 [2022-11-26 00:57:44,233 INFO L226 Difference]: Without dead ends: 40 [2022-11-26 00:57:44,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2022-11-26 00:57:44,235 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:44,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 167 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:57:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-26 00:57:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-11-26 00:57:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:57:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-26 00:57:44,244 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 18 [2022-11-26 00:57:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:44,244 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-26 00:57:44,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2022-11-26 00:57:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-26 00:57:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-26 00:57:44,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:44,245 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:44,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:44,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:44,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:44,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1746616589, now seen corresponding path program 4 times [2022-11-26 00:57:44,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:44,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623206369] [2022-11-26 00:57:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:45,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623206369] [2022-11-26 00:57:45,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623206369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89016231] [2022-11-26 00:57:45,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:57:45,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:45,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:45,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:57:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:45,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-26 00:57:45,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:45,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:46,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89016231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483014814] [2022-11-26 00:57:46,850 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:57:46,850 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:46,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:46,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:46,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:46,935 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-26 00:57:46,951 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:47,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1210#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:57:47,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:47,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:47,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-26 00:57:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660440469] [2022-11-26 00:57:47,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:47,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-26 00:57:47,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-26 00:57:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=2258, Unknown=0, NotChecked=0, Total=2970 [2022-11-26 00:57:47,535 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2022-11-26 00:59:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:54,598 INFO L93 Difference]: Finished difference Result 101 states and 133 transitions. [2022-11-26 00:59:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-26 00:59:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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 30 [2022-11-26 00:59:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:54,600 INFO L225 Difference]: With dead ends: 101 [2022-11-26 00:59:54,600 INFO L226 Difference]: Without dead ends: 64 [2022-11-26 00:59:54,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 128.7s TimeCoverageRelationStatistics Valid=1811, Invalid=4040, Unknown=1, NotChecked=0, Total=5852 [2022-11-26 00:59:54,603 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:54,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 312 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:59:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-26 00:59:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-11-26 00:59:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:59:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-11-26 00:59:54,616 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 30 [2022-11-26 00:59:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:54,616 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-11-26 00:59:54,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2022-11-26 00:59:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-11-26 00:59:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-26 00:59:54,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:54,618 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:54,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:59:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:59:54,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:59:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 382443123, now seen corresponding path program 5 times [2022-11-26 00:59:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559436935] [2022-11-26 00:59:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:57,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:57,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559436935] [2022-11-26 00:59:57,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559436935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:59:57,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405419281] [2022-11-26 00:59:57,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:59:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:59:57,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:59:57,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:59:57,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea2b1ff-2cf2-4e65-85e7-c4d0a2eaa8cb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:59:58,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-11-26 00:59:58,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:59:58,184 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-26 00:59:58,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:59:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:58,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:00:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:14,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405419281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:00:14,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [781564331] [2022-11-26 01:00:14,411 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 01:00:14,411 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:00:14,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:00:14,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:00:14,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:00:14,499 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-26 01:00:14,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:00:15,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1980#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:00:15,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:00:15,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:00:15,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-11-26 01:00:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002266392] [2022-11-26 01:00:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:00:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-26 01:00:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-26 01:00:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2606, Invalid=7900, Unknown=0, NotChecked=0, Total=10506 [2022-11-26 01:00:15,747 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 97 states have internal predecessors, (103), 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) [2022-11-26 01:00:18,991 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455)) (.cse0 (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse22 (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse18 (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse23 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455)) (.cse2 (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455)) (.cse13 (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse3 (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse4 (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455)) (.cse30 (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455)) (.cse31 (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse19 (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455)) (.cse1 (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse28 (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse20 (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse37 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455)) (.cse32 (< (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse41 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 45) 4294967296) 268435455)) (.cse9 (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse38 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455)) (.cse8 (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse33 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455)) (.cse24 (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse27 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455)) (.cse43 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455)) (.cse42 (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455)) (.cse25 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455)) (.cse35 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455)) (.cse36 (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse44 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455)) (.cse45 (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse40 (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse39 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455)) (.cse26 (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse10 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455)) (.cse29 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455)) (.cse34 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455))) (and (or (not .cse0) .cse1) .cse2 (or .cse3 (not .cse4)) (or (not .cse5) .cse6) (or .cse7 (not .cse8)) (or (not .cse9) .cse10) (or .cse11 (not .cse12)) (or (not .cse11) .cse13) (or .cse14 (not .cse15)) (or .cse16 (not .cse17)) (or (not .cse16) .cse18) (or .cse0 (not .cse19)) (or (not .cse20) .cse21) (or .cse22 (not .cse23)) (or .cse24 (not .cse22)) (or .cse25 (not .cse26)) (or .cse27 (not .cse18)) (or .cse23 (not .cse2)) (or (not .cse13) .cse28) (or .cse29 (not .cse3)) (or .cse4 (not .cse30)) (or (not .cse6) .cse31) (or (not .cse21) .cse32) (or .cse33 (not .cse34)) (or (not .cse7) .cse30) (or .cse35 (not .cse14)) (or (not .cse36) .cse37) (or (not .cse31) .cse19) (or .cse17 (not .cse1)) (or .cse38 (not .cse39)) (or (not .cse28) .cse20) (or .cse40 (not .cse37)) (or .cse41 (not .cse32)) (or (not .cse41) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 46) 4294967296) 268435455)) (or (not .cse42) .cse9) (or (not .cse38) .cse8) (or (not .cse33) .cse5) (or .cse12 (not .cse43)) (or .cse44 (not .cse24)) (or (not .cse27) .cse43) (or .cse42 (not .cse45)) (or .cse15 (not .cse25)) (or (not .cse35) .cse36) (or (not .cse44) .cse45) (or (not .cse40) .cse39) (or .cse26 (not .cse10)) (or (not .cse29) .cse34))) is different from false [2022-11-26 01:03:58,303 WARN L233 SmtUtils]: Spent 2.92m on a formula simplification. DAG size of input: 276 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:07:29,491 WARN L233 SmtUtils]: Spent 2.65m on a formula simplification. DAG size of input: 270 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:07:31,521 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455)) (.cse0 (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse21 (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse18 (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse22 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455)) (.cse2 (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455)) (.cse13 (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse3 (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse4 (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455)) (.cse29 (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455)) (.cse30 (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse19 (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455)) (.cse1 (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse27 (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse20 (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse35 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455)) (.cse9 (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse36 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455)) (.cse8 (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse31 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455)) (.cse23 (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse26 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455)) (.cse40 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455)) (.cse39 (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455)) (.cse24 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455)) (.cse33 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455)) (.cse34 (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse41 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455)) (.cse42 (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse38 (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse37 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455)) (.cse25 (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse10 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455)) (.cse28 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455)) (.cse32 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455))) (and (or (not .cse0) .cse1) .cse2 (or .cse3 (not .cse4)) (or (not .cse5) .cse6) (or .cse7 (not .cse8)) (or (not .cse9) .cse10) (or .cse11 (not .cse12)) (or (not .cse11) .cse13) (or .cse14 (not .cse15)) (or .cse16 (not .cse17)) (or (not .cse16) .cse18) (or .cse0 (not .cse19)) (or (not .cse20) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455)) (or .cse21 (not .cse22)) (or .cse23 (not .cse21)) (or .cse24 (not .cse25)) (or .cse26 (not .cse18)) (or .cse22 (not .cse2)) (or (not .cse13) .cse27) (or .cse28 (not .cse3)) (or .cse4 (not .cse29)) (or (not .cse6) .cse30) (or .cse31 (not .cse32)) (or (not .cse7) .cse29) (or .cse33 (not .cse14)) (or (not .cse34) .cse35) (or (not .cse30) .cse19) (or .cse17 (not .cse1)) (or .cse36 (not .cse37)) (or (not .cse27) .cse20) (or .cse38 (not .cse35)) (or (not .cse39) .cse9) (or (not .cse36) .cse8) (or (not .cse31) .cse5) (or .cse12 (not .cse40)) (or .cse41 (not .cse23)) (or (not .cse26) .cse40) (or .cse39 (not .cse42)) (or .cse15 (not .cse24)) (or (not .cse33) .cse34) (or (not .cse41) .cse42) (or (not .cse38) .cse37) (or .cse25 (not .cse10)) (or (not .cse28) .cse32))) is different from false [2022-11-26 01:07:33,541 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455)) (.cse0 (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse20 (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse18 (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455)) (.cse2 (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455)) (.cse13 (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse3 (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse4 (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455)) (.cse28 (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455)) (.cse29 (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse19 (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455)) (.cse1 (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse26 (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse34 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455)) (.cse9 (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse35 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455)) (.cse8 (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse30 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455)) (.cse22 (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse25 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455)) (.cse39 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455)) (.cse38 (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455)) (.cse23 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455)) (.cse32 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455)) (.cse33 (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse40 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455)) (.cse41 (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse37 (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse36 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455)) (.cse24 (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (.cse10 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455)) (.cse27 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455)) (.cse31 (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455))) (and (or (not .cse0) .cse1) .cse2 (or .cse3 (not .cse4)) (or (not .cse5) .cse6) (or .cse7 (not .cse8)) (or (not .cse9) .cse10) (or .cse11 (not .cse12)) (or (not .cse11) .cse13) (or .cse14 (not .cse15)) (or .cse16 (not .cse17)) (or (not .cse16) .cse18) (or .cse0 (not .cse19)) (or .cse20 (not .cse21)) (or .cse22 (not .cse20)) (or .cse23 (not .cse24)) (or .cse25 (not .cse18)) (or .cse21 (not .cse2)) (or (not .cse13) .cse26) (or .cse27 (not .cse3)) (or .cse4 (not .cse28)) (or (not .cse6) .cse29) (or .cse30 (not .cse31)) (or (not .cse7) .cse28) (or .cse32 (not .cse14)) (or (not .cse33) .cse34) (or (not .cse29) .cse19) (or .cse17 (not .cse1)) (or .cse35 (not .cse36)) (or (not .cse26) (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) (or .cse37 (not .cse34)) (or (not .cse38) .cse9) (or (not .cse35) .cse8) (or (not .cse30) .cse5) (or .cse12 (not .cse39)) (or .cse40 (not .cse22)) (or (not .cse25) .cse39) (or .cse38 (not .cse41)) (or .cse15 (not .cse23)) (or (not .cse32) .cse33) (or (not .cse40) .cse41) (or (not .cse37) .cse36) (or .cse24 (not .cse10)) (or (not .cse27) .cse31))) is different from false [2022-11-26 01:10:12,232 WARN L233 SmtUtils]: Spent 1.94m on a formula simplification. DAG size of input: 252 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)