./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8 --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 bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:57,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:57,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:57,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:57,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:57,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:57,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:57,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:57,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:57,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:57,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:57,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:57,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:57,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:57,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:57,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:57,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:57,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:57,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:57,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:57,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:57,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:57,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:57,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:57,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:57,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:57,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:57,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:57,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:57,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:57,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:57,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:57,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:57,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:57,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:57,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:57,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:57,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:57,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:57,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:57,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:57,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:20:57,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:57,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:57,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:57,278 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:57,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:57,279 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:57,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:57,279 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:57,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:57,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:57,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:57,280 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:57,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:57,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:57,281 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:57,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:57,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:20:57,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:57,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:20:57,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:57,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:57,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:57,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:57,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:57,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:20:57,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:57,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:57,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:57,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:57,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:57,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:57,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:57,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:57,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:57,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:57,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:57,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:57,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:57,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:57,293 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da [2021-11-07 01:20:57,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:57,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:57,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:57,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:57,650 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:57,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2021-11-07 01:20:57,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/94dffab3f/8da792ccb1ff4c38afffdb669e37049e/FLAGbb5106759 [2021-11-07 01:20:58,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:58,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2021-11-07 01:20:58,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/94dffab3f/8da792ccb1ff4c38afffdb669e37049e/FLAGbb5106759 [2021-11-07 01:20:58,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/94dffab3f/8da792ccb1ff4c38afffdb669e37049e [2021-11-07 01:20:58,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:58,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:58,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:58,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:58,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:58,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:58" (1/1) ... [2021-11-07 01:20:58,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc8cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:58, skipping insertion in model container [2021-11-07 01:20:58,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:58" (1/1) ... [2021-11-07 01:20:58,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:58,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:59,244 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44118,44131] [2021-11-07 01:20:59,258 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44660,44673] [2021-11-07 01:20:59,380 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56247,56260] [2021-11-07 01:20:59,381 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56368,56381] [2021-11-07 01:20:59,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:59,417 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:20:59,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e2d26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:59, skipping insertion in model container [2021-11-07 01:20:59,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:59,425 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:20:59,428 INFO L168 Benchmark]: Toolchain (without parser) took 826.32 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 52.4 MB in the beginning and 78.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:59,430 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:59,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.54 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 52.3 MB in the beginning and 78.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:59,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 819.54 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 52.3 MB in the beginning and 78.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8 --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 bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:21:01,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:21:01,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:21:01,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:21:01,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:21:01,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:21:01,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:21:01,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:21:01,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:21:01,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:21:01,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:21:01,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:21:01,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:21:01,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:21:01,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:21:01,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:21:01,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:21:01,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:21:01,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:21:01,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:21:01,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:21:01,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:21:01,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:21:01,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:21:01,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:21:01,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:21:01,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:21:01,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:21:01,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:21:01,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:21:01,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:21:01,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:21:01,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:21:01,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:21:01,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:21:01,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:21:01,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:21:01,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:21:01,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:21:01,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:21:01,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:21:01,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:21:01,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:21:01,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:21:01,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:21:01,945 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:21:01,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:21:01,945 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:21:01,945 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:21:01,946 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:21:01,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:21:01,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:21:01,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:21:01,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:21:01,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:21:01,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:21:01,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:21:01,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:21:01,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:21:01,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:21:01,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:21:01,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:21:01,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:21:01,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:21:01,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:21:01,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:21:01,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:21:01,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:21:01,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:01,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:21:01,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:21:01,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:21:01,954 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:21:01,954 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:01,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:21:01,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:21:01,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:21:01,956 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da [2021-11-07 01:21:02,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:21:02,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:21:02,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:21:02,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:21:02,403 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:21:02,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2021-11-07 01:21:02,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/d58d63103/628eb16a153e497b82d3502cccbd0e24/FLAGc880f4f44 [2021-11-07 01:21:03,175 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:21:03,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2021-11-07 01:21:03,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/d58d63103/628eb16a153e497b82d3502cccbd0e24/FLAGc880f4f44 [2021-11-07 01:21:03,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/data/d58d63103/628eb16a153e497b82d3502cccbd0e24 [2021-11-07 01:21:03,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:21:03,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:21:03,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:03,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:21:03,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:21:03,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:03" (1/1) ... [2021-11-07 01:21:03,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9b4fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:03, skipping insertion in model container [2021-11-07 01:21:03,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:03" (1/1) ... [2021-11-07 01:21:03,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:21:03,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:04,166 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44118,44131] [2021-11-07 01:21:04,190 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44660,44673] [2021-11-07 01:21:04,361 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56247,56260] [2021-11-07 01:21:04,362 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56368,56381] [2021-11-07 01:21:04,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:04,396 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:21:04,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:04,437 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44118,44131] [2021-11-07 01:21:04,440 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44660,44673] [2021-11-07 01:21:04,542 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56247,56260] [2021-11-07 01:21:04,543 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56368,56381] [2021-11-07 01:21:04,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:04,563 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:21:04,609 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44118,44131] [2021-11-07 01:21:04,615 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[44660,44673] [2021-11-07 01:21:04,694 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56247,56260] [2021-11-07 01:21:04,696 WARN L228 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_14772457-ae50-402e-8a8f-97284d1eb0c4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i[56368,56381] [2021-11-07 01:21:04,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:04,800 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:21:04,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04 WrapperNode [2021-11-07 01:21:04,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:04,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:04,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:21:04,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:21:04,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:04,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:04,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:04,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:21:04,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:21:04,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:21:04,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:04,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:21:05,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:21:05,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:21:05,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:21:05,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:05,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:21:05,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:21:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:21:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:21:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:21:05,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:21:05,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:21:05,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:21:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:21:11,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:21:11,735 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-07 01:21:11,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:21:11 BoogieIcfgContainer [2021-11-07 01:21:11,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:21:11,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:21:11,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:21:11,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:21:11,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:21:03" (1/3) ... [2021-11-07 01:21:11,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e04a3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:21:11, skipping insertion in model container [2021-11-07 01:21:11,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (2/3) ... [2021-11-07 01:21:11,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e04a3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:21:11, skipping insertion in model container [2021-11-07 01:21:11,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:21:11" (3/3) ... [2021-11-07 01:21:11,751 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-2.i [2021-11-07 01:21:11,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:21:11,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 01:21:11,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:21:11,818 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:21:11,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 01:21:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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) [2021-11-07 01:21:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:21:11,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:11,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:11,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-07 01:21:11,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:11,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386697154] [2021-11-07 01:21:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:11,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:11,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:11,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:21:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:12,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:21:12,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:12,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:12,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:12,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386697154] [2021-11-07 01:21:12,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386697154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:12,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:12,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:21:12,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478116403] [2021-11-07 01:21:12,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:21:12,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:21:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:21:12,224 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:12,287 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-07 01:21:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:21:12,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:21:12,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:12,310 INFO L225 Difference]: With dead ends: 544 [2021-11-07 01:21:12,310 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 01:21:12,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:21:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 01:21:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-07 01:21:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 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) [2021-11-07 01:21:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-07 01:21:12,390 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-07 01:21:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:12,390 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-07 01:21:12,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-07 01:21:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:21:12,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:12,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:12,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:12,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-07 01:21:12,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:12,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641921307] [2021-11-07 01:21:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:12,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:12,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:12,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:21:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:12,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:12,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:12,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:13,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:13,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641921307] [2021-11-07 01:21:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641921307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:13,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:13,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:21:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602007142] [2021-11-07 01:21:13,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:13,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:13,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:13,070 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 01:21:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:17,601 INFO L93 Difference]: Finished difference Result 701 states and 886 transitions. [2021-11-07 01:21:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-07 01:21:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:17,604 INFO L225 Difference]: With dead ends: 701 [2021-11-07 01:21:17,604 INFO L226 Difference]: Without dead ends: 433 [2021-11-07 01:21:17,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-07 01:21:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 378. [2021-11-07 01:21:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.326027397260274) internal successors, (484), 377 states have internal predecessors, (484), 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) [2021-11-07 01:21:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 484 transitions. [2021-11-07 01:21:17,644 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 484 transitions. Word has length 10 [2021-11-07 01:21:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:17,644 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 484 transitions. [2021-11-07 01:21:17,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 01:21:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 484 transitions. [2021-11-07 01:21:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:21:17,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:17,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:17,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:17,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-07 01:21:17,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:17,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894403921] [2021-11-07 01:21:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:17,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:17,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:17,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:17,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:21:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:18,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:18,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:18,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:18,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:18,253 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:21:18,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:21:18,363 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:21:18,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:21:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:18,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:18,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:18,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894403921] [2021-11-07 01:21:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894403921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:18,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:18,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:21:18,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161284402] [2021-11-07 01:21:18,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:18,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:18,508 INFO L87 Difference]: Start difference. First operand 378 states and 484 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-07 01:21:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:28,123 INFO L93 Difference]: Finished difference Result 822 states and 1044 transitions. [2021-11-07 01:21:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2021-11-07 01:21:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:28,128 INFO L225 Difference]: With dead ends: 822 [2021-11-07 01:21:28,128 INFO L226 Difference]: Without dead ends: 603 [2021-11-07 01:21:28,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:21:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-07 01:21:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 377. [2021-11-07 01:21:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 364 states have (on average 1.3241758241758241) internal successors, (482), 376 states have internal predecessors, (482), 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) [2021-11-07 01:21:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 482 transitions. [2021-11-07 01:21:28,150 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 482 transitions. Word has length 12 [2021-11-07 01:21:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:28,151 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 482 transitions. [2021-11-07 01:21:28,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-07 01:21:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 482 transitions. [2021-11-07 01:21:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:21:28,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:28,153 INFO L513 BasicCegarLoop]: 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] [2021-11-07 01:21:28,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:28,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:28,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-07 01:21:28,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:28,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153836097] [2021-11-07 01:21:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:28,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:28,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:28,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:21:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:28,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:28,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:28,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:28,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:28,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153836097] [2021-11-07 01:21:28,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153836097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:28,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:28,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:21:28,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333882562] [2021-11-07 01:21:28,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:21:28,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:21:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:28,969 INFO L87 Difference]: Start difference. First operand 377 states and 482 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 01:21:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:29,139 INFO L93 Difference]: Finished difference Result 752 states and 968 transitions. [2021-11-07 01:21:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-07 01:21:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:29,143 INFO L225 Difference]: With dead ends: 752 [2021-11-07 01:21:29,143 INFO L226 Difference]: Without dead ends: 385 [2021-11-07 01:21:29,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-07 01:21:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-07 01:21:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2756756756756757) internal successors, (472), 382 states have internal predecessors, (472), 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) [2021-11-07 01:21:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 472 transitions. [2021-11-07 01:21:29,163 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 472 transitions. Word has length 44 [2021-11-07 01:21:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:29,164 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 472 transitions. [2021-11-07 01:21:29,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 01:21:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 472 transitions. [2021-11-07 01:21:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:21:29,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:29,172 INFO L513 BasicCegarLoop]: 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] [2021-11-07 01:21:29,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:29,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:29,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-07 01:21:29,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:29,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976589799] [2021-11-07 01:21:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:29,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:29,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:29,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:29,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:21:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:29,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:29,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:29,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:29,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:29,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976589799] [2021-11-07 01:21:29,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976589799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:29,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:29,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:21:29,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749045362] [2021-11-07 01:21:29,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:21:29,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:21:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:29,942 INFO L87 Difference]: Start difference. First operand 383 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-07 01:21:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:34,305 INFO L93 Difference]: Finished difference Result 929 states and 1164 transitions. [2021-11-07 01:21:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:21:34,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 44 [2021-11-07 01:21:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:34,330 INFO L225 Difference]: With dead ends: 929 [2021-11-07 01:21:34,330 INFO L226 Difference]: Without dead ends: 927 [2021-11-07 01:21:34,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:21:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-07 01:21:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 381. [2021-11-07 01:21:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.2737127371273713) internal successors, (470), 380 states have internal predecessors, (470), 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) [2021-11-07 01:21:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2021-11-07 01:21:34,354 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 44 [2021-11-07 01:21:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:34,356 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2021-11-07 01:21:34,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-07 01:21:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2021-11-07 01:21:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:21:34,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:34,360 INFO L513 BasicCegarLoop]: 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, 1, 1] [2021-11-07 01:21:34,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:34,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:34,574 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-07 01:21:34,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:34,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118496718] [2021-11-07 01:21:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:34,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:34,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:34,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:21:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:34,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:35,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:35,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:35,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118496718] [2021-11-07 01:21:35,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118496718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:35,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:35,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:35,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931710259] [2021-11-07 01:21:35,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:35,442 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 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) [2021-11-07 01:21:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:38,049 INFO L93 Difference]: Finished difference Result 1293 states and 1622 transitions. [2021-11-07 01:21:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:38,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 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 [2021-11-07 01:21:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:38,057 INFO L225 Difference]: With dead ends: 1293 [2021-11-07 01:21:38,058 INFO L226 Difference]: Without dead ends: 958 [2021-11-07 01:21:38,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-07 01:21:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 473. [2021-11-07 01:21:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 472 states have internal predecessors, (581), 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) [2021-11-07 01:21:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 581 transitions. [2021-11-07 01:21:38,092 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 581 transitions. Word has length 51 [2021-11-07 01:21:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 581 transitions. [2021-11-07 01:21:38,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 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) [2021-11-07 01:21:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 581 transitions. [2021-11-07 01:21:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:21:38,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:38,099 INFO L513 BasicCegarLoop]: 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, 1, 1, 1] [2021-11-07 01:21:38,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:38,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:38,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-07 01:21:38,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:38,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299635231] [2021-11-07 01:21:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:38,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:38,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:38,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:38,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:21:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:38,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:38,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:38,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:38,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:38,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299635231] [2021-11-07 01:21:38,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299635231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:38,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:38,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:21:38,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14325306] [2021-11-07 01:21:38,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:38,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:38,959 INFO L87 Difference]: Start difference. First operand 473 states and 581 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-07 01:21:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:39,055 INFO L93 Difference]: Finished difference Result 903 states and 1118 transitions. [2021-11-07 01:21:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 52 [2021-11-07 01:21:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:39,059 INFO L225 Difference]: With dead ends: 903 [2021-11-07 01:21:39,065 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 01:21:39,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 01:21:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-07 01:21:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 464 states have (on average 1.2586206896551724) internal successors, (584), 475 states have internal predecessors, (584), 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) [2021-11-07 01:21:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 584 transitions. [2021-11-07 01:21:39,089 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 584 transitions. Word has length 52 [2021-11-07 01:21:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:39,090 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 584 transitions. [2021-11-07 01:21:39,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-07 01:21:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 584 transitions. [2021-11-07 01:21:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:21:39,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:39,093 INFO L513 BasicCegarLoop]: 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, 1, 1, 1] [2021-11-07 01:21:39,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:39,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:39,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-07 01:21:39,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:39,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15690131] [2021-11-07 01:21:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:39,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:39,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:39,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:39,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:21:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:39,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:39,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:39,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:40,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:40,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15690131] [2021-11-07 01:21:40,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15690131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:40,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1291302322] [2021-11-07 01:21:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:40,152 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:40,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:21:40,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:21:40,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:21:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:40,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:40,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:21:40,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:21:41,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1291302322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:41,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:21:41,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-07 01:21:41,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032759764] [2021-11-07 01:21:41,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:21:41,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:21:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:21:41,280 INFO L87 Difference]: Start difference. First operand 476 states and 584 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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) [2021-11-07 01:21:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:47,005 INFO L93 Difference]: Finished difference Result 2984 states and 3768 transitions. [2021-11-07 01:21:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:21:47,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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 54 [2021-11-07 01:21:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:47,020 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 01:21:47,020 INFO L226 Difference]: Without dead ends: 2554 [2021-11-07 01:21:47,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:21:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-07 01:21:47,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 658. [2021-11-07 01:21:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 646 states have (on average 1.2337461300309598) internal successors, (797), 657 states have internal predecessors, (797), 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) [2021-11-07 01:21:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 797 transitions. [2021-11-07 01:21:47,066 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 797 transitions. Word has length 54 [2021-11-07 01:21:47,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:47,067 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 797 transitions. [2021-11-07 01:21:47,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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) [2021-11-07 01:21:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 797 transitions. [2021-11-07 01:21:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:21:47,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:47,070 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:47,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:47,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 01:21:47,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:47,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:21:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-07 01:21:47,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:47,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101985468] [2021-11-07 01:21:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:47,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:47,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:47,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:21:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:47,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:47,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:21:48,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:21:48,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:48,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101985468] [2021-11-07 01:21:48,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101985468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:48,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974393342] [2021-11-07 01:21:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:48,535 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:48,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:21:48,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:21:48,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:21:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:49,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:49,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:21:49,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:21:49,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [974393342] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:49,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681223255] [2021-11-07 01:21:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:49,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:21:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:49,653 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:21:49,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:21:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:50,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:50,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:50,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:50,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:50,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:21:50,428 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:21:50,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:21:50,542 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:21:50,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:21:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:21:50,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:21:50,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681223255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:50,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:21:50,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:21:50,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156975752] [2021-11-07 01:21:50,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:50,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:21:50,806 INFO L87 Difference]: Start difference. First operand 658 states and 797 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-07 01:22:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:00,955 INFO L93 Difference]: Finished difference Result 885 states and 1084 transitions. [2021-11-07 01:22:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:22:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 82 [2021-11-07 01:22:00,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:00,961 INFO L225 Difference]: With dead ends: 885 [2021-11-07 01:22:00,961 INFO L226 Difference]: Without dead ends: 822 [2021-11-07 01:22:00,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:22:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-07 01:22:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 736. [2021-11-07 01:22:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 724 states have (on average 1.2458563535911602) internal successors, (902), 735 states have internal predecessors, (902), 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) [2021-11-07 01:22:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 902 transitions. [2021-11-07 01:22:01,006 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 902 transitions. Word has length 82 [2021-11-07 01:22:01,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:01,008 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 902 transitions. [2021-11-07 01:22:01,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-07 01:22:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 902 transitions. [2021-11-07 01:22:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:22:01,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:01,009 INFO L513 BasicCegarLoop]: 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, 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] [2021-11-07 01:22:01,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-07 01:22:01,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:01,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:01,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:01,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:22:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-07 01:22:01,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:01,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705011077] [2021-11-07 01:22:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:01,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:01,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:01,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:01,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:22:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:02,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:22:02,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:22:02,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:22:02,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:02,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705011077] [2021-11-07 01:22:02,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705011077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:22:02,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747280743] [2021-11-07 01:22:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:02,783 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:02,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:22:02,784 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:22:02,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:22:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:03,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:22:03,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:22:03,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:22:04,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747280743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:22:04,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342920297] [2021-11-07 01:22:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:04,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:22:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:22:04,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:22:04,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:22:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:04,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:22:04,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:22:05,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:22:05,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342920297] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:22:05,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:22:05,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:22:05,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147329421] [2021-11-07 01:22:05,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:22:05,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:22:05,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:22:05,258 INFO L87 Difference]: Start difference. First operand 736 states and 902 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-11-07 01:22:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:05,674 INFO L93 Difference]: Finished difference Result 1446 states and 1794 transitions. [2021-11-07 01:22:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:22:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 84 [2021-11-07 01:22:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:05,679 INFO L225 Difference]: With dead ends: 1446 [2021-11-07 01:22:05,679 INFO L226 Difference]: Without dead ends: 756 [2021-11-07 01:22:05,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:22:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-07 01:22:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-11-07 01:22:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 744 states have (on average 1.239247311827957) internal successors, (922), 755 states have internal predecessors, (922), 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) [2021-11-07 01:22:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 922 transitions. [2021-11-07 01:22:05,726 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 922 transitions. Word has length 84 [2021-11-07 01:22:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:05,726 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 922 transitions. [2021-11-07 01:22:05,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-11-07 01:22:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 922 transitions. [2021-11-07 01:22:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 01:22:05,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:05,730 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:05,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:05,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 01:22:06,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 01:22:06,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:22:06,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:22:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-07 01:22:06,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:06,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285366782] [2021-11-07 01:22:06,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:22:06,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:06,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:06,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:22:33,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:22:33,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:22:33,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:22:33,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:22:33,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:22:34,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:34,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285366782] [2021-11-07 01:22:34,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285366782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:22:34,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [686803842] [2021-11-07 01:22:34,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:22:34,498 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:22:34,499 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:22:34,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:23:25,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:23:25,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:23:25,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:23:25,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:23:25,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:23:26,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [686803842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:26,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619195073] [2021-11-07 01:23:26,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:23:26,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:23:26,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:26,084 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:23:26,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14772457-ae50-402e-8a8f-97284d1eb0c4/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process