./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea --- 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-e04fb08 [2022-11-16 16:31:54,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:31:54,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:31:54,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:31:54,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:31:54,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:31:54,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:31:54,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:31:54,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:31:54,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:31:54,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:31:54,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:31:54,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:31:54,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:31:54,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:31:54,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:31:54,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:31:54,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:31:54,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:31:54,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:31:54,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:31:54,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:31:54,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:31:54,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:31:54,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:31:54,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:31:54,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:31:54,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:31:54,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:31:54,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:31:54,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:31:54,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:31:54,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:31:54,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:31:54,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:31:54,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:31:54,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:31:54,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:31:54,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:31:54,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:31:54,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:31:54,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 16:31:54,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:31:54,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:31:54,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:31:54,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:31:54,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:31:54,257 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:31:54,257 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:31:54,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:31:54,258 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:31:54,258 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:31:54,260 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:31:54,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:31:54,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:31:54,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:31:54,261 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:31:54,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:31:54,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:31:54,262 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:31:54,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:31:54,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:31:54,263 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:31:54,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:31:54,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:31:54,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:31:54,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:31:54,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:31:54,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:31:54,267 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:31:54,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:31:54,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:31:54,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:31:54,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:31:54,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:31:54,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:31:54,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:31:54,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:31:54,270 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:31:54,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:31:54,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:31:54,271 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:31:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:31:54,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:31:54,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:31:54,272 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_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713ae5dee39d08db1e818ebc31454a222c136fde7aad4a26405d3060cfa0eeea [2022-11-16 16:31:54,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:31:54,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:31:54,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:31:54,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:31:54,695 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:31:54,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2022-11-16 16:31:54,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/data/8800413c1/8c1ebf72cd23474eb32804e38c05c835/FLAG2ecadac09 [2022-11-16 16:31:55,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:31:55,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i [2022-11-16 16:31:55,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/data/8800413c1/8c1ebf72cd23474eb32804e38c05c835/FLAG2ecadac09 [2022-11-16 16:31:55,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/data/8800413c1/8c1ebf72cd23474eb32804e38c05c835 [2022-11-16 16:31:55,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:31:55,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:31:55,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:31:55,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:31:55,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:31:55,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:31:55" (1/1) ... [2022-11-16 16:31:55,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30634f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:55, skipping insertion in model container [2022-11-16 16:31:55,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:31:55" (1/1) ... [2022-11-16 16:31:55,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:31:55,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:31:56,370 WARN L229 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_42fd58e6-19dd-4df1-9113-2152d2fd7192/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2022-11-16 16:31:56,599 WARN L229 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_42fd58e6-19dd-4df1-9113-2152d2fd7192/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2022-11-16 16:31:56,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:31:56,670 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:31:56,700 WARN L229 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_42fd58e6-19dd-4df1-9113-2152d2fd7192/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[33021,33034] [2022-11-16 16:31:56,807 WARN L229 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_42fd58e6-19dd-4df1-9113-2152d2fd7192/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-3.i[49681,49694] [2022-11-16 16:31:56,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:31:56,904 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:31:56,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56 WrapperNode [2022-11-16 16:31:56,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:31:56,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:31:56,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:31:56,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:31:56,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:56,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,117 INFO L138 Inliner]: procedures = 177, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1696 [2022-11-16 16:31:57,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:31:57,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:31:57,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:31:57,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:31:57,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:31:57,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:31:57,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:31:57,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:31:57,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (1/1) ... [2022-11-16 16:31:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:31:57,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:57,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:31:57,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:31:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:31:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 16:31:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 16:31:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:31:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 16:31:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 16:31:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:31:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:31:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:31:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:31:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 16:31:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:31:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:31:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:31:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:31:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:31:57,821 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:31:57,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:32:00,204 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:32:01,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:32:01,035 INFO L300 CfgBuilder]: Removed 100 assume(true) statements. [2022-11-16 16:32:01,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:32:01 BoogieIcfgContainer [2022-11-16 16:32:01,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:32:01,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:32:01,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:32:01,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:32:01,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:31:55" (1/3) ... [2022-11-16 16:32:01,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbe2340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:32:01, skipping insertion in model container [2022-11-16 16:32:01,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:31:56" (2/3) ... [2022-11-16 16:32:01,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbe2340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:32:01, skipping insertion in model container [2022-11-16 16:32:01,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:32:01" (3/3) ... [2022-11-16 16:32:01,050 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-3.i [2022-11-16 16:32:01,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:32:01,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 16:32:01,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:32:01,151 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;@997b23e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:32:01,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 16:32:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 166 states have (on average 1.8313253012048192) internal successors, (304), 181 states have internal predecessors, (304), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:32:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 16:32:01,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:01,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 16:32:01,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1326082, now seen corresponding path program 1 times [2022-11-16 16:32:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:01,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852460013] [2022-11-16 16:32:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:01,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954314213] [2022-11-16 16:32:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:01,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:01,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:01,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:32:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:01,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:32:01,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:01,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:01,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852460013] [2022-11-16 16:32:01,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:32:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954314213] [2022-11-16 16:32:01,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954314213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:01,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:01,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:32:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059003895] [2022-11-16 16:32:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:01,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:32:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:32:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:01,797 INFO L87 Difference]: Start difference. First operand has 190 states, 166 states have (on average 1.8313253012048192) internal successors, (304), 181 states have internal predecessors, (304), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:05,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 16:32:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:07,070 INFO L93 Difference]: Finished difference Result 528 states and 925 transitions. [2022-11-16 16:32:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:32:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 16:32:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:07,094 INFO L225 Difference]: With dead ends: 528 [2022-11-16 16:32:07,094 INFO L226 Difference]: Without dead ends: 312 [2022-11-16 16:32:07,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:07,102 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 158 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 404 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 16:32:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-16 16:32:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 212. [2022-11-16 16:32:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 186 states have (on average 1.2473118279569892) internal successors, (232), 203 states have internal predecessors, (232), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:32:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 264 transitions. [2022-11-16 16:32:07,242 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 264 transitions. Word has length 3 [2022-11-16 16:32:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:07,244 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 264 transitions. [2022-11-16 16:32:07,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 264 transitions. [2022-11-16 16:32:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 16:32:07,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:07,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:32:07,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:07,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 16:32:07,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1177535634, now seen corresponding path program 1 times [2022-11-16 16:32:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:07,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82907321] [2022-11-16 16:32:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:07,817 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:07,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244274476] [2022-11-16 16:32:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:07,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:07,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:32:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:09,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:32:09,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:09,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:09,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82907321] [2022-11-16 16:32:09,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:32:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244274476] [2022-11-16 16:32:09,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244274476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:09,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:09,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:32:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516313195] [2022-11-16 16:32:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:32:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:32:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:32:09,746 INFO L87 Difference]: Start difference. First operand 212 states and 264 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:12,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 16:32:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:14,800 INFO L93 Difference]: Finished difference Result 312 states and 378 transitions. [2022-11-16 16:32:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:32:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-16 16:32:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:14,808 INFO L225 Difference]: With dead ends: 312 [2022-11-16 16:32:14,808 INFO L226 Difference]: Without dead ends: 311 [2022-11-16 16:32:14,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:32:14,810 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 115 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:14,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 547 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 16:32:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-16 16:32:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 304. [2022-11-16 16:32:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 272 states have (on average 1.2058823529411764) internal successors, (328), 289 states have internal predecessors, (328), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 16:32:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2022-11-16 16:32:14,845 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 48 [2022-11-16 16:32:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:14,846 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2022-11-16 16:32:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2022-11-16 16:32:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 16:32:14,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:14,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:32:14,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:15,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:15,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2143865535, now seen corresponding path program 1 times [2022-11-16 16:32:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55937569] [2022-11-16 16:32:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:15,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064515624] [2022-11-16 16:32:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:15,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:15,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:15,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:15,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:32:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:17,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:32:17,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:17,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:17,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55937569] [2022-11-16 16:32:17,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:32:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064515624] [2022-11-16 16:32:17,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064515624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:17,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:17,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:32:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973057167] [2022-11-16 16:32:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:17,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:32:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:32:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:32:17,362 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:20,307 INFO L93 Difference]: Finished difference Result 304 states and 372 transitions. [2022-11-16 16:32:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:32:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-16 16:32:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:20,315 INFO L225 Difference]: With dead ends: 304 [2022-11-16 16:32:20,315 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 16:32:20,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:32:20,317 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 118 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:20,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 331 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 16:32:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 16:32:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2022-11-16 16:32:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 271 states have (on average 1.1992619926199262) internal successors, (325), 286 states have internal predecessors, (325), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 16:32:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 369 transitions. [2022-11-16 16:32:20,342 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 369 transitions. Word has length 49 [2022-11-16 16:32:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:20,343 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 369 transitions. [2022-11-16 16:32:20,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 369 transitions. [2022-11-16 16:32:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 16:32:20,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:20,345 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:32:20,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 16:32:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:20,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1329569936, now seen corresponding path program 1 times [2022-11-16 16:32:20,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:20,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802018402] [2022-11-16 16:32:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:20,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123186486] [2022-11-16 16:32:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:20,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:20,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:20,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:20,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:32:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:22,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:32:22,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:23,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:23,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:23,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802018402] [2022-11-16 16:32:23,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:32:23,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123186486] [2022-11-16 16:32:23,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123186486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:23,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:23,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:32:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148948957] [2022-11-16 16:32:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:32:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:32:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:23,068 INFO L87 Difference]: Start difference. First operand 301 states and 369 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:25,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 16:32:27,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 16:32:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:27,672 INFO L93 Difference]: Finished difference Result 589 states and 737 transitions. [2022-11-16 16:32:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:32:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-16 16:32:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:27,683 INFO L225 Difference]: With dead ends: 589 [2022-11-16 16:32:27,683 INFO L226 Difference]: Without dead ends: 357 [2022-11-16 16:32:27,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:27,685 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 75 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:27,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 348 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-16 16:32:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-16 16:32:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 350. [2022-11-16 16:32:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 310 states have (on average 1.2258064516129032) internal successors, (380), 335 states have internal predecessors, (380), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 16:32:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 444 transitions. [2022-11-16 16:32:27,719 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 444 transitions. Word has length 51 [2022-11-16 16:32:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:27,719 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 444 transitions. [2022-11-16 16:32:27,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:32:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 444 transitions. [2022-11-16 16:32:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 16:32:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:27,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:32:27,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:27,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1301685130, now seen corresponding path program 1 times [2022-11-16 16:32:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487271687] [2022-11-16 16:32:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:28,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:28,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172497335] [2022-11-16 16:32:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:28,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:28,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:28,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:32:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:30,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:32:30,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 16:32:30,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:30,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487271687] [2022-11-16 16:32:30,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:32:30,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172497335] [2022-11-16 16:32:30,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172497335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:30,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:30,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:32:30,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7880136] [2022-11-16 16:32:30,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:30,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:32:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:30,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:32:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:30,156 INFO L87 Difference]: Start difference. First operand 350 states and 444 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:32:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:33,455 INFO L93 Difference]: Finished difference Result 672 states and 856 transitions. [2022-11-16 16:32:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:32:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2022-11-16 16:32:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:33,462 INFO L225 Difference]: With dead ends: 672 [2022-11-16 16:32:33,463 INFO L226 Difference]: Without dead ends: 348 [2022-11-16 16:32:33,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:32:33,465 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 11 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:33,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 331 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 16:32:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-16 16:32:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2022-11-16 16:32:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 308 states have (on average 1.224025974025974) internal successors, (377), 333 states have internal predecessors, (377), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 16:32:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 441 transitions. [2022-11-16 16:32:33,493 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 441 transitions. Word has length 64 [2022-11-16 16:32:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:33,494 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 441 transitions. [2022-11-16 16:32:33,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:32:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 441 transitions. [2022-11-16 16:32:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 16:32:33,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:33,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:32:33,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:33,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:33,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:32:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1755537739, now seen corresponding path program 1 times [2022-11-16 16:32:33,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047346637] [2022-11-16 16:32:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:33,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:32:33,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748447607] [2022-11-16 16:32:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:33,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:33,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:33,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:33,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:43:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:43:24,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 16:43:24,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:43:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 16:43:24,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:43:24,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:43:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047346637] [2022-11-16 16:43:24,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:43:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748447607] [2022-11-16 16:43:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748447607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:43:24,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:43:24,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:43:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802573738] [2022-11-16 16:43:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:43:24,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:43:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:43:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:43:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:43:24,946 INFO L87 Difference]: Start difference. First operand 348 states and 441 transitions. Second operand has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 16:43:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:43:27,553 INFO L93 Difference]: Finished difference Result 678 states and 874 transitions. [2022-11-16 16:43:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:43:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2022-11-16 16:43:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:43:27,563 INFO L225 Difference]: With dead ends: 678 [2022-11-16 16:43:27,564 INFO L226 Difference]: Without dead ends: 350 [2022-11-16 16:43:27,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:43:27,566 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:43:27,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 16:43:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-16 16:43:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-11-16 16:43:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 309 states have (on average 1.226537216828479) internal successors, (379), 335 states have internal predecessors, (379), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-16 16:43:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 447 transitions. [2022-11-16 16:43:27,590 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 447 transitions. Word has length 77 [2022-11-16 16:43:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:43:27,591 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 447 transitions. [2022-11-16 16:43:27,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 16:43:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 447 transitions. [2022-11-16 16:43:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 16:43:27,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:43:27,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:43:27,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:43:27,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 16:43:27,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-16 16:43:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:43:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1871789771, now seen corresponding path program 1 times [2022-11-16 16:43:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:43:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479566040] [2022-11-16 16:43:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:43:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:43:27,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:43:27,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466211690] [2022-11-16 16:43:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:43:27,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:43:27,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:43:27,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:43:27,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42fd58e6-19dd-4df1-9113-2152d2fd7192/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process