./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH --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 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:28,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:28,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:28,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:28,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:28,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:28,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:28,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:28,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:28,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:28,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:28,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:28,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:28,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:28,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:28,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:28,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:28,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:28,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:28,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:28,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:28,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:28,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:28,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:28,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:28,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:28,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:28,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:28,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:28,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:28,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:28,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:28,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:28,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:28,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:28,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:28,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:28,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:28,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:28,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:28,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:28,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:47:28,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:28,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:28,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:28,233 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:28,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:28,233 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:28,233 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:47:28,233 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:28,234 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:28,234 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:47:28,234 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:47:28,234 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:28,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:47:28,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:47:28,235 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:47:28,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:28,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:28,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:47:28,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:28,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:28,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:28,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:28,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:28,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:28,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:28,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:28,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:28,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:28,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:28,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:28,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:28,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:28,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:28,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:28,248 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:47:28,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:47:28,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:28,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:28,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:28,250 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-03 05:47:28,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:28,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:28,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:28,568 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:28,569 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:28,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-03 05:47:28,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/1adfb5cac/93ac7383fb1147aab564513ce888e63c/FLAG6add26d02 [2021-11-03 05:47:29,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:29,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-03 05:47:29,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/1adfb5cac/93ac7383fb1147aab564513ce888e63c/FLAG6add26d02 [2021-11-03 05:47:29,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/1adfb5cac/93ac7383fb1147aab564513ce888e63c [2021-11-03 05:47:29,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:29,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:29,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:29,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:29,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:29,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:29" (1/1) ... [2021-11-03 05:47:29,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13db1d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:29, skipping insertion in model container [2021-11-03 05:47:29,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:29" (1/1) ... [2021-11-03 05:47:29,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:29,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:30,082 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-03 05:47:30,236 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-03 05:47:30,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:30,269 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) [2021-11-03 05:47:30,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d72f656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:30, skipping insertion in model container [2021-11-03 05:47:30,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:30,271 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:47:30,275 INFO L168 Benchmark]: Toolchain (without parser) took 679.65 ms. Allocated memory is still 121.6 MB. Free memory was 82.8 MB in the beginning and 81.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:30,276 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 94.9 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:47:30,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.07 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 81.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:30,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 94.9 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.07 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 81.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH --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 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:32,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:32,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:32,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:32,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:32,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:32,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:32,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:32,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:32,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:32,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:32,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:32,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:32,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:32,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:32,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:32,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:32,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:32,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:32,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:32,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:32,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:32,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:32,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:32,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:32,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:32,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:32,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:32,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:32,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:32,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:32,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:32,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:32,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:32,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:32,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:32,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:32,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:32,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:32,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:32,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:32,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:47:32,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:32,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:32,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:32,645 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:32,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:32,645 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:32,646 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:32,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:32,646 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:32,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:32,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:32,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:32,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:32,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:32,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:32,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:32,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:32,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:47:32,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:47:32,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:32,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:32,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:32,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:32,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:32,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:47:32,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:32,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:32,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:32,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:32,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:32,652 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:47:32,652 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:32,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:32,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:32,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:32,653 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-03 05:47:32,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:32,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:32,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:32,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:32,992 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:32,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-03 05:47:33,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/45be0e789/44b8c2bff86b4bddb0936d19f3e02859/FLAG1de75c5df [2021-11-03 05:47:33,725 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:33,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-03 05:47:33,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/45be0e789/44b8c2bff86b4bddb0936d19f3e02859/FLAG1de75c5df [2021-11-03 05:47:34,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/data/45be0e789/44b8c2bff86b4bddb0936d19f3e02859 [2021-11-03 05:47:34,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:34,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:34,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:34,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:34,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:34,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:34" (1/1) ... [2021-11-03 05:47:34,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c6cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:34, skipping insertion in model container [2021-11-03 05:47:34,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:34" (1/1) ... [2021-11-03 05:47:34,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:34,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:34,748 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-03 05:47:34,963 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-03 05:47:34,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:34,991 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:47:35,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:35,022 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-03 05:47:35,105 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-03 05:47:35,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:35,118 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:47:35,142 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-03 05:47:35,193 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_74bbee29-9f60-4bf4-b527-79c46e4ddcae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-03 05:47:35,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:35,262 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:47:35,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35 WrapperNode [2021-11-03 05:47:35,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:35,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:35,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:47:35,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:47:35,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:35,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:47:35,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:47:35,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:47:35,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:47:35,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:47:35,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:47:35,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:47:35,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (1/1) ... [2021-11-03 05:47:35,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:35,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:47:35,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:47:35,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:47:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:47:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:47:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:47:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:47:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:47:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:47:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:47:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:47:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:47:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:47:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:47:35,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:47:46,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:47:46,865 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-03 05:47:46,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:47:46 BoogieIcfgContainer [2021-11-03 05:47:46,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:47:46,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:47:46,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:47:46,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:47:46,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:47:34" (1/3) ... [2021-11-03 05:47:46,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc72e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:47:46, skipping insertion in model container [2021-11-03 05:47:46,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:35" (2/3) ... [2021-11-03 05:47:46,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc72e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:47:46, skipping insertion in model container [2021-11-03 05:47:46,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:47:46" (3/3) ... [2021-11-03 05:47:46,875 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-2.i [2021-11-03 05:47:46,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:47:46,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 05:47:46,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:47:46,932 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 [2021-11-03 05:47:46,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:47:46,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 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) [2021-11-03 05:47:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:47:46,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:46,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:46,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-03 05:47:46,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:46,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354454456] [2021-11-03 05:47:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:46,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:46,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:47,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:47:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:47,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:47:47,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:47,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:47,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:47,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354454456] [2021-11-03 05:47:47,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354454456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:47,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:47,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:47:47,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096752741] [2021-11-03 05:47:47,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:47:47,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:47:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:47:47,350 INFO L87 Difference]: Start difference. First operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 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) 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) [2021-11-03 05:47:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:47,414 INFO L93 Difference]: Finished difference Result 572 states and 962 transitions. [2021-11-03 05:47:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:47:47,415 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 [2021-11-03 05:47:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:47,431 INFO L225 Difference]: With dead ends: 572 [2021-11-03 05:47:47,432 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 05:47:47,439 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 [2021-11-03 05:47:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 05:47:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-03 05:47:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 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) [2021-11-03 05:47:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-03 05:47:47,506 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-03 05:47:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:47,507 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-03 05:47:47,507 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) [2021-11-03 05:47:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-03 05:47:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:47:47,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:47,511 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] [2021-11-03 05:47:47,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:47,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:47,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-03 05:47:47,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:47,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457006621] [2021-11-03 05:47:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:47,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:47,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:47,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:47:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:47,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:47,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:48,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:48,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:48,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457006621] [2021-11-03 05:47:48,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457006621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:48,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:48,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:47:48,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449154150] [2021-11-03 05:47:48,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:48,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:47:48,245 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-03 05:47:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:48,574 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-03 05:47:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:48,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 42 [2021-11-03 05:47:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:48,580 INFO L225 Difference]: With dead ends: 589 [2021-11-03 05:47:48,580 INFO L226 Difference]: Without dead ends: 507 [2021-11-03 05:47:48,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:47:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-03 05:47:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-03 05:47:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 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) [2021-11-03 05:47:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-03 05:47:48,607 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-03 05:47:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:48,608 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-03 05:47:48,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-03 05:47:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-03 05:47:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:47:48,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:48,639 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:48,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:48,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:48,853 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-03 05:47:48,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:48,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514244016] [2021-11-03 05:47:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:48,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:48,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:48,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:47:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:49,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:49,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:47:50,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:47:51,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:51,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514244016] [2021-11-03 05:47:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514244016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:51,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:47:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820144216] [2021-11-03 05:47:51,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:47:51,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:47:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:47:51,084 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2021-11-03 05:47:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:51,222 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-03 05:47:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:51,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 238 [2021-11-03 05:47:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:51,225 INFO L225 Difference]: With dead ends: 850 [2021-11-03 05:47:51,226 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 05:47:51,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:47:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 05:47:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-03 05:47:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 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) [2021-11-03 05:47:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-03 05:47:51,245 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-03 05:47:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:51,246 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-03 05:47:51,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2021-11-03 05:47:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-03 05:47:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:47:51,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:51,253 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:51,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:51,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:51,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-03 05:47:51,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:51,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776948966] [2021-11-03 05:47:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:51,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:51,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:51,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:47:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:52,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:47:52,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:47:52,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:47:53,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:53,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776948966] [2021-11-03 05:47:53,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776948966] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:53,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:53,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 05:47:53,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987465126] [2021-11-03 05:47:53,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:47:53,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:47:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:47:53,961 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2021-11-03 05:47:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:54,049 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-03 05:47:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:54,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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 238 [2021-11-03 05:47:54,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:54,052 INFO L225 Difference]: With dead ends: 819 [2021-11-03 05:47:54,053 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 05:47:54,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:47:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 05:47:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 05:47:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 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) [2021-11-03 05:47:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-03 05:47:54,068 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-03 05:47:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-03 05:47:54,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2021-11-03 05:47:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-03 05:47:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:47:54,073 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:54,073 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:54,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:54,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:54,297 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-03 05:47:54,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:54,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514770188] [2021-11-03 05:47:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:54,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:54,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:54,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:47:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:55,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:55,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:47:56,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:47:57,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:57,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514770188] [2021-11-03 05:47:57,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514770188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:57,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:57,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:47:57,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209635478] [2021-11-03 05:47:57,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:57,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:57,027 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-11-03 05:47:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:57,539 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-03 05:47:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 238 [2021-11-03 05:47:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:57,551 INFO L225 Difference]: With dead ends: 789 [2021-11-03 05:47:57,551 INFO L226 Difference]: Without dead ends: 417 [2021-11-03 05:47:57,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-03 05:47:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-03 05:47:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 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) [2021-11-03 05:47:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-03 05:47:57,568 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-03 05:47:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:57,569 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-03 05:47:57,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2021-11-03 05:47:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-03 05:47:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-03 05:47:57,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:57,573 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:57,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:57,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:57,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:47:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-03 05:47:57,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:57,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490311998] [2021-11-03 05:47:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:57,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:57,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:57,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:47:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:58,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:58,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:47:59,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:47:59,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:59,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490311998] [2021-11-03 05:47:59,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490311998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:59,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:59,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:47:59,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14658903] [2021-11-03 05:47:59,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:59,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:47:59,931 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2021-11-03 05:48:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:00,058 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-03 05:48:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:48:00,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 245 [2021-11-03 05:48:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:00,062 INFO L225 Difference]: With dead ends: 805 [2021-11-03 05:48:00,062 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 05:48:00,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:48:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 05:48:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-03 05:48:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 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) [2021-11-03 05:48:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-03 05:48:00,078 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-03 05:48:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:00,079 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-03 05:48:00,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2021-11-03 05:48:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-03 05:48:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:48:00,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:00,083 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:00,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:00,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:48:00,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:00,301 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-03 05:48:00,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:00,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822979526] [2021-11-03 05:48:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:00,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:00,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:00,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:48:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:01,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:01,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:02,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:02,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:02,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822979526] [2021-11-03 05:48:02,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822979526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:02,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [85965649] [2021-11-03 05:48:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:02,895 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:02,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:02,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:48:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:04,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:48:04,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:48:05,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [85965649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:05,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:05,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-03 05:48:05,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617215391] [2021-11-03 05:48:05,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:48:05,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:05,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:48:05,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:48:05,406 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2021-11-03 05:48:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:05,609 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-03 05:48:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 248 [2021-11-03 05:48:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:05,617 INFO L225 Difference]: With dead ends: 803 [2021-11-03 05:48:05,619 INFO L226 Difference]: Without dead ends: 471 [2021-11-03 05:48:05,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:48:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-03 05:48:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-03 05:48:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 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) [2021-11-03 05:48:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-03 05:48:05,637 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-03 05:48:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:05,638 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-03 05:48:05,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2021-11-03 05:48:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-03 05:48:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:48:05,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:05,651 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:05,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:05,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:06,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:06,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-03 05:48:06,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:06,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132154074] [2021-11-03 05:48:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:06,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:06,080 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:06,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:48:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:07,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:07,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:07,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:08,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:08,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132154074] [2021-11-03 05:48:08,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132154074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:08,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1669263088] [2021-11-03 05:48:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:08,678 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:08,678 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:08,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:48:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:48:10,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:48:11,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:48:11,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1669263088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:11,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:11,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:48:11,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328542473] [2021-11-03 05:48:11,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:11,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:11,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:11,950 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-03 05:48:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:12,801 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-03 05:48:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 248 [2021-11-03 05:48:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:12,812 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 05:48:12,813 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 05:48:12,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 05:48:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-03 05:48:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 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) [2021-11-03 05:48:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-03 05:48:12,855 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-03 05:48:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-03 05:48:12,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-03 05:48:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-03 05:48:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 05:48:12,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:12,863 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:12,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:13,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:13,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:13,281 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-03 05:48:13,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:13,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572657174] [2021-11-03 05:48:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:13,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:13,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:13,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:13,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:48:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:15,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:15,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:15,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:48:16,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:16,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572657174] [2021-11-03 05:48:16,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572657174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:16,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1086457497] [2021-11-03 05:48:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:16,254 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:16,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:16,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:48:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:18,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:48:18,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:48:20,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:48:22,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1086457497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:22,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:22,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:48:22,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053803460] [2021-11-03 05:48:22,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:22,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:22,457 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-03 05:48:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:23,073 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-03 05:48:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 255 [2021-11-03 05:48:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:23,079 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 05:48:23,079 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:48:23,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:48:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-03 05:48:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 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) [2021-11-03 05:48:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-03 05:48:23,107 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-03 05:48:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:23,107 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-03 05:48:23,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-03 05:48:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-03 05:48:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:48:23,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:23,110 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:23,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:23,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:23,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:48:23,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-03 05:48:23,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:23,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135093119] [2021-11-03 05:48:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:23,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:23,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:23,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:48:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:25,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:25,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:26,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:26,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:26,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135093119] [2021-11-03 05:48:26,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135093119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:26,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1231228315] [2021-11-03 05:48:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:26,836 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:26,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:26,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:48:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:48:29,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:48:29,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:48:30,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1231228315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:30,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:30,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:48:30,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108929561] [2021-11-03 05:48:30,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:30,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:30,053 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2021-11-03 05:48:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:30,171 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-03 05:48:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 265 [2021-11-03 05:48:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:30,190 INFO L225 Difference]: With dead ends: 959 [2021-11-03 05:48:30,190 INFO L226 Difference]: Without dead ends: 800 [2021-11-03 05:48:30,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-03 05:48:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-03 05:48:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 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) [2021-11-03 05:48:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-03 05:48:30,221 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-03 05:48:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:30,222 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-03 05:48:30,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2021-11-03 05:48:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-03 05:48:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:48:30,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:30,225 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:30,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:30,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:30,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:30,643 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-03 05:48:30,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:30,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338406257] [2021-11-03 05:48:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:30,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:30,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:30,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:48:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:32,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:33,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:33,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:33,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338406257] [2021-11-03 05:48:33,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338406257] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:33,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [819151185] [2021-11-03 05:48:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:33,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:33,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:33,999 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:34,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:48:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:36,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:48:36,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:48:37,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:48:37,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [819151185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:37,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:37,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:48:37,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161041921] [2021-11-03 05:48:37,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:48:37,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:48:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:48:37,826 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2021-11-03 05:48:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:37,976 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-03 05:48:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:48:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 265 [2021-11-03 05:48:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:37,981 INFO L225 Difference]: With dead ends: 1457 [2021-11-03 05:48:37,981 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:48:37,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:48:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:48:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-03 05:48:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 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) [2021-11-03 05:48:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-03 05:48:38,008 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-03 05:48:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:38,009 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-03 05:48:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2021-11-03 05:48:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-03 05:48:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:48:38,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:38,013 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:38,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:38,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:38,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:48:38,423 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:38,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-03 05:48:38,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:38,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417553098] [2021-11-03 05:48:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:38,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:38,425 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:38,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:48:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:40,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:40,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:41,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:42,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:42,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417553098] [2021-11-03 05:48:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417553098] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:42,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1220593903] [2021-11-03 05:48:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:42,069 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:42,072 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:42,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:48:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:44,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:48:44,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:48:45,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:48:45,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1220593903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:45,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:45,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:48:45,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281939545] [2021-11-03 05:48:45,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:48:45,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:48:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:48:45,910 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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) [2021-11-03 05:48:46,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:46,011 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-03 05:48:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:48:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 265 [2021-11-03 05:48:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:46,015 INFO L225 Difference]: With dead ends: 929 [2021-11-03 05:48:46,015 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 05:48:46,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:48:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 05:48:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-03 05:48:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 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) [2021-11-03 05:48:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-03 05:48:46,041 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-03 05:48:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:46,042 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-03 05:48:46,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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) [2021-11-03 05:48:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-03 05:48:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:48:46,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:46,045 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:46,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:46,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:46,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:46,466 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:48:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-03 05:48:46,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:46,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852326810] [2021-11-03 05:48:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:46,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:46,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:46,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:46,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:48:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:48,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:48,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:49,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:50,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:50,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852326810] [2021-11-03 05:48:50,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852326810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:50,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1086287901] [2021-11-03 05:48:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:50,476 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:50,477 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:50,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:48:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:53,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:53,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:54,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:48:54,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1086287901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:54,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693975964] [2021-11-03 05:48:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:54,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:54,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:48:54,992 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:48:54,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 05:48:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:57,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:48:57,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:48:58,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:48:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693975964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:59,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:48:59,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:48:59,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142324070] [2021-11-03 05:48:59,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:48:59,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:48:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:48:59,055 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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) [2021-11-03 05:48:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:59,640 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-03 05:48:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:48:59,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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 265 [2021-11-03 05:48:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:59,645 INFO L225 Difference]: With dead ends: 1387 [2021-11-03 05:48:59,645 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 05:48:59,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:48:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 05:48:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-03 05:48:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 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) [2021-11-03 05:48:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-03 05:48:59,675 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-03 05:48:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:59,675 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-03 05:48:59,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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) [2021-11-03 05:48:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-03 05:48:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 05:48:59,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:59,688 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:59,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:59,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-03 05:49:00,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:00,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:49:00,302 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:49:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-03 05:49:00,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:00,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037031260] [2021-11-03 05:49:00,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:49:00,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:00,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:00,305 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:49:03,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:49:03,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:49:03,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:49:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:49:03,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:49:04,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:04,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037031260] [2021-11-03 05:49:04,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037031260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:49:04,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [564836685] [2021-11-03 05:49:04,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:49:04,918 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:49:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:49:04,919 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:49:04,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:49:09,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:49:09,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:49:09,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:49:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:49:10,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:49:11,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [564836685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:49:11,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755529546] [2021-11-03 05:49:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:49:11,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:49:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:49:11,212 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:49:11,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 05:49:14,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:49:14,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:49:14,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:49:14,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:49:15,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:49:16,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755529546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:49:16,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:49:16,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-03 05:49:16,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102382537] [2021-11-03 05:49:16,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 05:49:16,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 05:49:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:49:16,670 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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) [2021-11-03 05:49:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:40,672 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-03 05:49:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 05:49:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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 281 [2021-11-03 05:49:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:40,688 INFO L225 Difference]: With dead ends: 3281 [2021-11-03 05:49:40,688 INFO L226 Difference]: Without dead ends: 2593 [2021-11-03 05:49:40,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 05:49:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-03 05:49:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-03 05:49:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 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) [2021-11-03 05:49:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-03 05:49:40,825 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-03 05:49:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:40,826 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-03 05:49:40,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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) [2021-11-03 05:49:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-03 05:49:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-03 05:49:40,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:40,835 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2021-11-03 05:49:40,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:41,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:41,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:41,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:41,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:49:41,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-03 05:49:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:41,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362107216] [2021-11-03 05:49:41,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:49:41,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:41,456 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:41,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74bbee29-9f60-4bf4-b527-79c46e4ddcae/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process