./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.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_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/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_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/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_4b4f6039-59fd-4e80-bf38-bc1579602539/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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:08,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:08,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:08,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:08,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:08,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:08,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:08,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:08,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:08,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:08,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:08,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:08,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:08,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:08,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:08,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:08,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:08,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:08,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:08,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:08,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:08,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:08,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:08,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:08,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:08,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:08,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:08,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:08,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:08,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:08,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:08,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:08,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:08,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:08,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:08,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:08,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:08,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:08,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:08,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:08,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:08,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:47:08,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:08,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:08,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:08,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:08,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:08,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:08,188 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:47:08,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:08,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:08,189 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:47:08,189 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:47:08,189 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:08,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:47:08,190 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:47:08,190 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:47:08,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:08,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:08,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:47:08,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:08,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:08,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:08,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:08,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:08,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:08,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:08,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:08,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:08,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:08,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:08,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:08,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:08,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:08,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:08,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:08,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:47:08,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:47:08,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:08,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:08,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:08,196 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_4b4f6039-59fd-4e80-bf38-bc1579602539/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-03 05:47:08,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:08,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:08,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:08,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:08,468 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:08,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-03 05:47:08,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/2bde6642a/c99d49d93b33477f80db6d6ef89241ae/FLAG07ceb5edd [2021-11-03 05:47:09,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:09,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-03 05:47:09,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/2bde6642a/c99d49d93b33477f80db6d6ef89241ae/FLAG07ceb5edd [2021-11-03 05:47:09,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/2bde6642a/c99d49d93b33477f80db6d6ef89241ae [2021-11-03 05:47:09,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:09,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:09,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:09,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:09,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:09,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:09" (1/1) ... [2021-11-03 05:47:09,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfb9196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:09, skipping insertion in model container [2021-11-03 05:47:09,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:09" (1/1) ... [2021-11-03 05:47:09,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:09,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:10,082 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_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-03 05:47:10,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:10,409 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 05:47:10,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49a94154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:10, skipping insertion in model container [2021-11-03 05:47:10,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:10,412 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:47:10,417 INFO L168 Benchmark]: Toolchain (without parser) took 988.50 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 67.4 MB in the beginning and 101.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:10,418 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:47:10,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 985.69 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 67.4 MB in the beginning and 101.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:10,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 985.69 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 67.4 MB in the beginning and 101.3 MB in the end (delta: -33.9 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: 734]: 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_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/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_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/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_4b4f6039-59fd-4e80-bf38-bc1579602539/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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:12,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:12,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:13,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:13,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:13,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:13,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:13,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:13,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:13,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:13,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:13,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:13,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:13,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:13,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:13,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:13,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:13,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:13,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:13,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:13,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:13,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:13,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:13,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:13,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:13,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:13,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:13,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:13,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:13,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:13,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:13,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:13,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:13,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:13,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:13,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:13,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:13,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:13,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:13,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:13,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:13,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:47:13,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:13,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:13,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:13,199 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:13,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:13,199 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:13,199 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:13,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:13,200 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:13,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:13,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:13,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:13,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:13,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:13,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:13,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:13,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:13,205 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:47:13,205 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:47:13,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:13,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:13,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:13,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:13,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:13,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:47:13,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:13,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:13,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:13,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:13,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:13,207 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:47:13,208 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:13,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:13,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:13,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:13,209 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_4b4f6039-59fd-4e80-bf38-bc1579602539/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-03 05:47:13,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:13,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:13,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:13,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:13,641 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:13,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-03 05:47:13,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/198dd5e72/a116a8c21c6a42a087bf9479126d9fe4/FLAGe7da15cb9 [2021-11-03 05:47:14,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:14,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-03 05:47:14,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/198dd5e72/a116a8c21c6a42a087bf9479126d9fe4/FLAGe7da15cb9 [2021-11-03 05:47:14,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/data/198dd5e72/a116a8c21c6a42a087bf9479126d9fe4 [2021-11-03 05:47:14,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:14,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:14,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:14,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:14,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:14,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:14" (1/1) ... [2021-11-03 05:47:14,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fc3188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:14, skipping insertion in model container [2021-11-03 05:47:14,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:14" (1/1) ... [2021-11-03 05:47:14,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:14,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:15,322 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_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-03 05:47:15,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:15,713 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:47:15,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:15,755 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_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-03 05:47:15,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:15,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:47:15,972 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_4b4f6039-59fd-4e80-bf38-bc1579602539/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-03 05:47:16,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:16,200 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:47:16,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16 WrapperNode [2021-11-03 05:47:16,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:16,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:16,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:47:16,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:47:16,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:16,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:47:16,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:47:16,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:47:16,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:47:16,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:47:16,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:47:16,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:47:16,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (1/1) ... [2021-11-03 05:47:16,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:16,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:47:16,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:47:16,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:47:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:47:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:47:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:47:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:47:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:47:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:47:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:47:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:47:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:47:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:47:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:47:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:47:31,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:47:31,876 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2021-11-03 05:47:31,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:47:31 BoogieIcfgContainer [2021-11-03 05:47:31,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:47:31,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:47:31,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:47:31,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:47:31,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:47:14" (1/3) ... [2021-11-03 05:47:31,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5341b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:47:31, skipping insertion in model container [2021-11-03 05:47:31,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:16" (2/3) ... [2021-11-03 05:47:31,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5341b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:47:31, skipping insertion in model container [2021-11-03 05:47:31,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:47:31" (3/3) ... [2021-11-03 05:47:31,901 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2021-11-03 05:47:31,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:47:31,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 05:47:31,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:47:31,968 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 05:47:31,968 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 05:47:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 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 05:47:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:47:32,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:32,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:32,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-03 05:47:32,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:32,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640971496] [2021-11-03 05:47:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:32,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:32,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:32,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:47:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:32,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:47:32,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:32,374 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 05:47:32,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:32,418 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 05:47:32,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:32,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640971496] [2021-11-03 05:47:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640971496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:32,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:32,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:47:32,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651720291] [2021-11-03 05:47:32,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:47:32,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:47:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:47:32,470 INFO L87 Difference]: Start difference. First operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 05:47:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:32,568 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2021-11-03 05:47:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:47:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-03 05:47:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:32,603 INFO L225 Difference]: With dead ends: 1038 [2021-11-03 05:47:32,606 INFO L226 Difference]: Without dead ends: 465 [2021-11-03 05:47:32,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 05:47:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-03 05:47:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-03 05:47:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 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 05:47:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-03 05:47:32,690 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-03 05:47:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:32,690 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-03 05:47:32,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 05:47:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-03 05:47:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:47:32,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:32,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:32,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:32,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:32,908 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-03 05:47:32,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:32,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210695452] [2021-11-03 05:47:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:32,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:32,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:32,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:32,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:47:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:33,502 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 05:47:33,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:33,651 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 05:47:33,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:33,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210695452] [2021-11-03 05:47:33,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210695452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:33,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:33,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:47:33,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963382772] [2021-11-03 05:47:33,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:47:33,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:47:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:47:33,656 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:33,874 INFO L93 Difference]: Finished difference Result 756 states and 989 transitions. [2021-11-03 05:47:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:33,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:47:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:33,878 INFO L225 Difference]: With dead ends: 756 [2021-11-03 05:47:33,878 INFO L226 Difference]: Without dead ends: 469 [2021-11-03 05:47:33,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:47:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-03 05:47:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2021-11-03 05:47:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.334070796460177) internal successors, (603), 467 states have internal predecessors, (603), 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 05:47:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2021-11-03 05:47:33,904 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 44 [2021-11-03 05:47:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:33,904 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2021-11-03 05:47:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2021-11-03 05:47:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:47:33,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:33,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:33,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:34,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:34,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1615141200, now seen corresponding path program 1 times [2021-11-03 05:47:34,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:34,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003539901] [2021-11-03 05:47:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:34,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:34,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:34,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:47:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:34,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:47:34,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:34,626 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 05:47:34,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:34,936 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 05:47:34,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:34,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003539901] [2021-11-03 05:47:34,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003539901] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:34,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:34,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 05:47:34,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161425864] [2021-11-03 05:47:34,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:47:34,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:47:34,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:47:34,939 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 05:47:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:35,124 INFO L93 Difference]: Finished difference Result 729 states and 939 transitions. [2021-11-03 05:47:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:35,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:47:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:35,128 INFO L225 Difference]: With dead ends: 729 [2021-11-03 05:47:35,128 INFO L226 Difference]: Without dead ends: 462 [2021-11-03 05:47:35,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:47:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-03 05:47:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-11-03 05:47:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 461 states have internal predecessors, (593), 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 05:47:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 593 transitions. [2021-11-03 05:47:35,145 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 593 transitions. Word has length 44 [2021-11-03 05:47:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:35,145 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 593 transitions. [2021-11-03 05:47:35,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 05:47:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 593 transitions. [2021-11-03 05:47:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:47:35,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:35,148 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:35,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:47:35,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:35,363 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:35,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1883778186, now seen corresponding path program 1 times [2021-11-03 05:47:35,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:35,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977822135] [2021-11-03 05:47:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:35,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:35,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:35,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:35,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:47:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:35,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:47:35,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:47:35,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:47:35,960 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:47:35,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 05:47:36,088 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 05:47:36,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 05:47:36,218 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 05:47:36,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:36,444 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 05:47:36,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:36,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977822135] [2021-11-03 05:47:36,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977822135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:36,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:36,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:47:36,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536091113] [2021-11-03 05:47:36,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:47:36,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:47:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:47:36,450 INFO L87 Difference]: Start difference. First operand 462 states and 593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:53,075 INFO L93 Difference]: Finished difference Result 825 states and 1057 transitions. [2021-11-03 05:47:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:47:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:47:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:53,080 INFO L225 Difference]: With dead ends: 825 [2021-11-03 05:47:53,080 INFO L226 Difference]: Without dead ends: 537 [2021-11-03 05:47:53,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:47:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-03 05:47:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 464. [2021-11-03 05:47:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 448 states have (on average 1.328125) internal successors, (595), 463 states have internal predecessors, (595), 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 05:47:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 595 transitions. [2021-11-03 05:47:53,099 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 595 transitions. Word has length 44 [2021-11-03 05:47:53,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:53,099 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 595 transitions. [2021-11-03 05:47:53,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 595 transitions. [2021-11-03 05:47:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:53,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:53,104 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:53,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:53,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:53,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1640597416, now seen corresponding path program 1 times [2021-11-03 05:47:53,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:53,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955543066] [2021-11-03 05:47:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:53,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:53,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:53,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:47:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:53,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:53,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:54,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:54,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955543066] [2021-11-03 05:47:54,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955543066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:54,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:54,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:47:54,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396684146] [2021-11-03 05:47:54,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:47:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:47:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:47:54,538 INFO L87 Difference]: Start difference. First operand 464 states and 595 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 05:47:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:54,680 INFO L93 Difference]: Finished difference Result 1017 states and 1310 transitions. [2021-11-03 05:47:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 97 [2021-11-03 05:47:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:54,685 INFO L225 Difference]: With dead ends: 1017 [2021-11-03 05:47:54,686 INFO L226 Difference]: Without dead ends: 557 [2021-11-03 05:47:54,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 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 05:47:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-03 05:47:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 467. [2021-11-03 05:47:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 466 states have internal predecessors, (590), 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 05:47:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 590 transitions. [2021-11-03 05:47:54,707 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 590 transitions. Word has length 97 [2021-11-03 05:47:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:54,707 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 590 transitions. [2021-11-03 05:47:54,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 05:47:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 590 transitions. [2021-11-03 05:47:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:54,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:54,710 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:54,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:54,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:54,929 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:54,930 INFO L85 PathProgramCache]: Analyzing trace with hash -35071002, now seen corresponding path program 1 times [2021-11-03 05:47:54,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:54,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866847809] [2021-11-03 05:47:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:54,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:54,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:54,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:47:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:47:55,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:55,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:56,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:56,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866847809] [2021-11-03 05:47:56,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866847809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:56,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:56,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-03 05:47:56,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308967294] [2021-11-03 05:47:56,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:56,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:56,533 INFO L87 Difference]: Start difference. First operand 467 states and 590 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 05:47:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:56,689 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-03 05:47:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 97 [2021-11-03 05:47:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:56,694 INFO L225 Difference]: With dead ends: 1013 [2021-11-03 05:47:56,694 INFO L226 Difference]: Without dead ends: 550 [2021-11-03 05:47:56,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-03 05:47:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 461. [2021-11-03 05:47:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.303370786516854) internal successors, (580), 460 states have internal predecessors, (580), 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 05:47:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 580 transitions. [2021-11-03 05:47:56,715 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 580 transitions. Word has length 97 [2021-11-03 05:47:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:56,716 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 580 transitions. [2021-11-03 05:47:56,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 05:47:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 580 transitions. [2021-11-03 05:47:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:56,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:56,718 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:56,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:56,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:56,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-03 05:47:56,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:56,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163106107] [2021-11-03 05:47:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:56,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:56,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:56,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:47:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:57,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:47:57,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:58,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:58,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:58,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163106107] [2021-11-03 05:47:58,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163106107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:58,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:58,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:47:58,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939204981] [2021-11-03 05:47:58,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:58,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:58,665 INFO L87 Difference]: Start difference. First operand 461 states and 580 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 05:47:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:59,257 INFO L93 Difference]: Finished difference Result 1186 states and 1492 transitions. [2021-11-03 05:47:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:59,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-03 05:47:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:59,264 INFO L225 Difference]: With dead ends: 1186 [2021-11-03 05:47:59,264 INFO L226 Difference]: Without dead ends: 729 [2021-11-03 05:47:59,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 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 05:47:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-03 05:47:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 694. [2021-11-03 05:47:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 678 states have (on average 1.3097345132743363) internal successors, (888), 693 states have internal predecessors, (888), 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 05:47:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2021-11-03 05:47:59,296 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 97 [2021-11-03 05:47:59,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:59,296 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2021-11-03 05:47:59,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 05:47:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2021-11-03 05:47:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 05:47:59,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:59,299 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:59,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:59,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:59,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:47:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-03 05:47:59,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:59,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141889497] [2021-11-03 05:47:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:59,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:59,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:59,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:48:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:00,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:48:00,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:48:00,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:48:00,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:00,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141889497] [2021-11-03 05:48:00,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141889497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:00,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:00,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:48:00,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643589225] [2021-11-03 05:48:00,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:48:00,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:48:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:48:00,721 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 05:48:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:00,892 INFO L93 Difference]: Finished difference Result 1349 states and 1731 transitions. [2021-11-03 05:48:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:48:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 104 [2021-11-03 05:48:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:00,898 INFO L225 Difference]: With dead ends: 1349 [2021-11-03 05:48:00,898 INFO L226 Difference]: Without dead ends: 703 [2021-11-03 05:48:00,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 05:48:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-03 05:48:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-11-03 05:48:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 687 states have (on average 1.3056768558951966) internal successors, (897), 702 states have internal predecessors, (897), 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 05:48:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 897 transitions. [2021-11-03 05:48:00,930 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 897 transitions. Word has length 104 [2021-11-03 05:48:00,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:00,931 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 897 transitions. [2021-11-03 05:48:00,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 05:48:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 897 transitions. [2021-11-03 05:48:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:48:00,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:00,933 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:00,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 05:48:01,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:48:01,147 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:48:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:01,147 INFO L85 PathProgramCache]: Analyzing trace with hash 421191101, now seen corresponding path program 1 times [2021-11-03 05:48:01,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:01,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519619319] [2021-11-03 05:48:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:01,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:01,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:01,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:01,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:48:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:01,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:01,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:48:02,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:48:02,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:02,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519619319] [2021-11-03 05:48:02,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519619319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:02,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714238922] [2021-11-03 05:48:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:02,484 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:02,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:02,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:02,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:48:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:03,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:48:03,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:48:03,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:48:04,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [714238922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:04,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026115554] [2021-11-03 05:48:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:04,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:48:04,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:48:04,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 05:48:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:04,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:48:04,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:48:05,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:48:05,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026115554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:05,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:48:05,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:48:05,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024991550] [2021-11-03 05:48:05,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:48:05,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:48:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:48:05,335 INFO L87 Difference]: Start difference. First operand 703 states and 897 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 05:48:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:05,974 INFO L93 Difference]: Finished difference Result 1380 states and 1777 transitions. [2021-11-03 05:48:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:48:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 107 [2021-11-03 05:48:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:05,981 INFO L225 Difference]: With dead ends: 1380 [2021-11-03 05:48:05,981 INFO L226 Difference]: Without dead ends: 727 [2021-11-03 05:48:05,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 630 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 05:48:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-03 05:48:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-03 05:48:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.2953586497890295) internal successors, (921), 726 states have internal predecessors, (921), 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 05:48:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 921 transitions. [2021-11-03 05:48:06,011 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 921 transitions. Word has length 107 [2021-11-03 05:48:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:06,011 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 921 transitions. [2021-11-03 05:48:06,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 05:48:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 921 transitions. [2021-11-03 05:48:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 05:48:06,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:06,014 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:06,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:06,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:06,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:06,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:48:06,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:48:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash -872018179, now seen corresponding path program 2 times [2021-11-03 05:48:06,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:06,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902279119] [2021-11-03 05:48:06,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:48:06,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:06,624 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:06,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:48:07,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:48:07,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:48:07,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:48:07,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:48:07,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:48:08,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:08,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902279119] [2021-11-03 05:48:08,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902279119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:08,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [137876488] [2021-11-03 05:48:08,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:48:08,721 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:08,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:08,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-03 05:48:09,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:48:09,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:48:09,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:48:09,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:48:10,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:48:10,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [137876488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:10,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720986389] [2021-11-03 05:48:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:48:10,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:48:10,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:48:10,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 05:48:11,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:48:11,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:48:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:48:11,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:48:12,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 05:48:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720986389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:13,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:48:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-03 05:48:13,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038915635] [2021-11-03 05:48:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 05:48:13,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 05:48:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-03 05:48:13,296 INFO L87 Difference]: Start difference. First operand 727 states and 921 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 05:48:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:23,049 INFO L93 Difference]: Finished difference Result 2128 states and 2738 transitions. [2021-11-03 05:48:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:48:23,052 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 115 [2021-11-03 05:48:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:23,062 INFO L225 Difference]: With dead ends: 2128 [2021-11-03 05:48:23,063 INFO L226 Difference]: Without dead ends: 1455 [2021-11-03 05:48:23,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:48:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-03 05:48:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 793. [2021-11-03 05:48:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.274131274131274) internal successors, (990), 792 states have internal predecessors, (990), 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 05:48:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 990 transitions. [2021-11-03 05:48:23,117 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 990 transitions. Word has length 115 [2021-11-03 05:48:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:23,118 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 990 transitions. [2021-11-03 05:48:23,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 05:48:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 990 transitions. [2021-11-03 05:48:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 05:48:23,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:23,121 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:23,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:23,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:23,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:23,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:23,746 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 05:48:23,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:23,747 INFO L85 PathProgramCache]: Analyzing trace with hash -837922435, now seen corresponding path program 3 times [2021-11-03 05:48:23,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:23,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227659377] [2021-11-03 05:48:23,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:48:23,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:23,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:23,750 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:23,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4f6039-59fd-4e80-bf38-bc1579602539/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:48:26,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 05:48:26,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:48:26,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:48:26,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:26,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:48:26,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:48:26,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:48:26,388 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:48:26,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 05:48:26,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:48:26,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:48:26,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15