./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF --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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:04:46,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:04:46,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:04:46,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:04:46,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:04:46,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:04:46,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:04:46,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:04:46,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:04:46,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:04:46,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:04:46,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:04:46,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:04:46,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:04:46,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:04:46,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:04:46,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:04:46,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:04:46,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:04:46,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:04:46,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:04:46,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:04:46,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:04:46,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:04:46,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:04:46,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:04:46,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:04:46,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:04:46,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:04:46,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:04:46,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:04:46,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:04:46,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:04:46,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:04:46,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:04:46,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:04:46,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:04:46,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:04:46,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:04:46,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:04:46,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:04:46,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:04:46,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:04:46,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:04:46,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:04:46,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:04:46,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:04:46,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:04:46,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:04:46,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:04:46,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:04:46,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:04:46,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:04:46,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:04:46,289 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:04:46,289 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:04:46,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:04:46,290 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:04:46,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:04:46,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:04:46,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:04:46,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:04:46,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:04:46,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:04:46,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:04:46,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:04:46,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:04:46,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:04:46,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:04:46,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:04:46,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:04:46,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:04:46,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:04:46,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:04:46,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:04:46,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:04:46,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:04:46,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:04:46,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:04:46,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:04:46,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:04:46,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:04:46,297 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_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-11-12 23:04:46,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:04:46,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:04:46,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:04:46,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:04:46,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:04:46,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-12 23:04:46,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/f9cb1bbb8/0b6df0d362174a4e8e309f6e5d7b5bd4/FLAGda7d70994 [2021-11-12 23:04:47,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:04:47,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-12 23:04:47,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/f9cb1bbb8/0b6df0d362174a4e8e309f6e5d7b5bd4/FLAGda7d70994 [2021-11-12 23:04:47,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/f9cb1bbb8/0b6df0d362174a4e8e309f6e5d7b5bd4 [2021-11-12 23:04:47,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:04:47,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:04:47,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:04:47,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:04:47,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:04:47,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:04:47" (1/1) ... [2021-11-12 23:04:47,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c774c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:47, skipping insertion in model container [2021-11-12 23:04:47,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:04:47" (1/1) ... [2021-11-12 23:04:47,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:04:47,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:04:48,466 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-12 23:04:48,653 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-12 23:04:48,654 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-12 23:04:48,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:04:48,701 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) [2021-11-12 23:04:48,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16b6554d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:48, skipping insertion in model container [2021-11-12 23:04:48,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:04:48,702 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:04:48,704 INFO L158 Benchmark]: Toolchain (without parser) took 903.11ms. Allocated memory is still 127.9MB. Free memory was 89.4MB in the beginning and 92.7MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:04:48,705 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:04:48,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 896.59ms. Allocated memory is still 127.9MB. Free memory was 89.2MB in the beginning and 92.7MB in the end (delta: -3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:04:48,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 896.59ms. Allocated memory is still 127.9MB. Free memory was 89.2MB in the beginning and 92.7MB in the end (delta: -3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF --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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:04:51,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:04:51,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:04:51,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:04:51,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:04:51,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:04:51,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:04:51,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:04:51,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:04:51,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:04:51,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:04:51,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:04:51,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:04:51,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:04:51,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:04:51,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:04:51,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:04:51,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:04:51,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:04:51,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:04:51,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:04:51,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:04:51,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:04:51,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:04:51,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:04:51,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:04:51,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:04:51,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:04:51,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:04:51,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:04:51,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:04:51,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:04:51,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:04:51,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:04:51,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:04:51,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:04:51,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:04:51,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:04:51,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:04:51,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:04:51,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:04:51,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:04:51,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:04:51,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:04:51,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:04:51,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:04:51,307 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:04:51,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:04:51,308 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:04:51,308 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:04:51,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:04:51,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:04:51,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:04:51,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:04:51,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:04:51,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:04:51,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:04:51,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:04:51,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:04:51,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:04:51,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:04:51,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:04:51,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:04:51,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:04:51,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:04:51,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:04:51,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:04:51,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:04:51,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:04:51,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:04:51,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:04:51,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:04:51,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:04:51,315 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:04:51,316 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:04:51,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:04:51,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:04:51,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:04:51,317 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_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2021-11-12 23:04:51,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:04:51,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:04:51,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:04:51,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:04:51,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:04:51,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-12 23:04:51,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/94f4f0d9d/bb78b4d0d6274b54b2eed64dd7aa94f9/FLAGf268427ee [2021-11-12 23:04:52,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:04:52,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2021-11-12 23:04:52,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/94f4f0d9d/bb78b4d0d6274b54b2eed64dd7aa94f9/FLAGf268427ee [2021-11-12 23:04:52,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/data/94f4f0d9d/bb78b4d0d6274b54b2eed64dd7aa94f9 [2021-11-12 23:04:52,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:04:52,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:04:52,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:04:52,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:04:52,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:04:52,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:04:52" (1/1) ... [2021-11-12 23:04:52,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3477026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:52, skipping insertion in model container [2021-11-12 23:04:52,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:04:52" (1/1) ... [2021-11-12 23:04:52,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:04:52,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:04:53,220 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-12 23:04:53,365 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-12 23:04:53,366 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-12 23:04:53,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:04:53,423 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:04:53,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:04:53,491 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-12 23:04:53,553 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-12 23:04:53,554 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-12 23:04:53,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:04:53,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:04:53,615 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2021-11-12 23:04:53,700 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2021-11-12 23:04:53,704 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_6277856a-640d-41bd-880b-e12e74487678/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2021-11-12 23:04:53,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:04:53,783 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:04:53,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53 WrapperNode [2021-11-12 23:04:53,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:04:53,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:04:53,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:04:53,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:04:53,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:53,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:53,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:04:53,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:04:53,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:04:53,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:04:53,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:53,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:53,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:53,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:54,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:54,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:54,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:54,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:04:54,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:04:54,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:04:54,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:04:54,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (1/1) ... [2021-11-12 23:04:54,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:04:54,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:04:54,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:04:54,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:04:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:04:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:04:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:04:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:04:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:04:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:04:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:05:01,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:05:01,516 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-12 23:05:01,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:05:01 BoogieIcfgContainer [2021-11-12 23:05:01,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:05:01,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:05:01,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:05:01,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:05:01,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:04:52" (1/3) ... [2021-11-12 23:05:01,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df1245e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:05:01, skipping insertion in model container [2021-11-12 23:05:01,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:04:53" (2/3) ... [2021-11-12 23:05:01,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df1245e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:05:01, skipping insertion in model container [2021-11-12 23:05:01,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:05:01" (3/3) ... [2021-11-12 23:05:01,529 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2021-11-12 23:05:01,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:05:01,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:05:01,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:05:01,606 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 [2021-11-12 23:05:01,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:05:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:05:01,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:01,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:01,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2094566776, now seen corresponding path program 1 times [2021-11-12 23:05:01,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:01,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074772938] [2021-11-12 23:05:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:01,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:01,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:01,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:01,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:05:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:01,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:05:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:01,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:01,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:02,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074772938] [2021-11-12 23:05:02,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074772938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:02,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:02,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:05:02,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307173281] [2021-11-12 23:05:02,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:02,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:05:02,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:02,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:05:02,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:05:02,065 INFO L87 Difference]: Start difference. First operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:02,151 INFO L93 Difference]: Finished difference Result 427 states and 715 transitions. [2021-11-12 23:05:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:05:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:05:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:02,166 INFO L225 Difference]: With dead ends: 427 [2021-11-12 23:05:02,166 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 23:05:02,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:05:02,176 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:02,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 6.30ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:05:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 23:05:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-12 23:05:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2021-11-12 23:05:02,241 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 8 [2021-11-12 23:05:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:02,241 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2021-11-12 23:05:02,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2021-11-12 23:05:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:05:02,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:02,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:02,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:02,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:02,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash -716312389, now seen corresponding path program 1 times [2021-11-12 23:05:02,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:02,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389805066] [2021-11-12 23:05:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:02,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:02,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:02,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:05:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:02,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:05:02,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:02,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:02,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:02,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389805066] [2021-11-12 23:05:02,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389805066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:02,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:02,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:05:02,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868805542] [2021-11-12 23:05:02,980 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:02,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:05:02,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:05:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:02,989 INFO L87 Difference]: Start difference. First operand 181 states and 236 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:05,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:07,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:07,415 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-11-12 23:05:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:07,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:05:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:07,422 INFO L225 Difference]: With dead ends: 468 [2021-11-12 23:05:07,422 INFO L226 Difference]: Without dead ends: 287 [2021-11-12 23:05:07,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:07,426 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 140 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4215.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4363.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:07,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 623 Invalid, 79 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4363.47ms Time] [2021-11-12 23:05:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-12 23:05:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2021-11-12 23:05:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.3201438848920863) internal successors, (367), 279 states have internal predecessors, (367), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 373 transitions. [2021-11-12 23:05:07,457 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 373 transitions. Word has length 10 [2021-11-12 23:05:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:07,457 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 373 transitions. [2021-11-12 23:05:07,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 373 transitions. [2021-11-12 23:05:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:05:07,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:07,471 INFO L514 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] [2021-11-12 23:05:07,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:07,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:07,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -294024543, now seen corresponding path program 1 times [2021-11-12 23:05:07,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:07,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587756692] [2021-11-12 23:05:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:07,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:07,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:07,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:05:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:07,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:07,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:08,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:08,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:08,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587756692] [2021-11-12 23:05:08,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587756692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:08,465 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:08,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:05:08,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510045738] [2021-11-12 23:05:08,466 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:08,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:05:08,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:05:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:08,468 INFO L87 Difference]: Start difference. First operand 284 states and 373 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:08,687 INFO L93 Difference]: Finished difference Result 454 states and 597 transitions. [2021-11-12 23:05:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-12 23:05:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:08,691 INFO L225 Difference]: With dead ends: 454 [2021-11-12 23:05:08,691 INFO L226 Difference]: Without dead ends: 306 [2021-11-12 23:05:08,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:08,693 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 117 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:08,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 671 Invalid, 94 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [57 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 190.21ms Time] [2021-11-12 23:05:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-12 23:05:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 290. [2021-11-12 23:05:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.2570422535211268) internal successors, (357), 285 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-12 23:05:08,719 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 44 [2021-11-12 23:05:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:08,720 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-12 23:05:08,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-12 23:05:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:05:08,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:08,723 INFO L514 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] [2021-11-12 23:05:08,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:08,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:08,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1193467565, now seen corresponding path program 1 times [2021-11-12 23:05:08,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:08,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122015511] [2021-11-12 23:05:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:08,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:08,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:08,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:05:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:05:09,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:09,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:09,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122015511] [2021-11-12 23:05:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122015511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:09,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:09,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-12 23:05:09,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612309198] [2021-11-12 23:05:09,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:09,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:05:09,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:05:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:05:09,889 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-11-12 23:05:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:10,041 INFO L93 Difference]: Finished difference Result 446 states and 551 transitions. [2021-11-12 23:05:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 [2021-11-12 23:05:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:10,045 INFO L225 Difference]: With dead ends: 446 [2021-11-12 23:05:10,046 INFO L226 Difference]: Without dead ends: 292 [2021-11-12 23:05:10,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:05:10,052 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 164 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:10,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 738 Invalid, 70 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 129.10ms Time] [2021-11-12 23:05:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-12 23:05:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 278. [2021-11-12 23:05:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.2389705882352942) internal successors, (337), 273 states have internal predecessors, (337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 343 transitions. [2021-11-12 23:05:10,129 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 343 transitions. Word has length 44 [2021-11-12 23:05:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:10,130 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 343 transitions. [2021-11-12 23:05:10,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2021-11-12 23:05:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 343 transitions. [2021-11-12 23:05:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:05:10,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:10,135 INFO L514 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] [2021-11-12 23:05:10,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:10,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:10,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash -440515753, now seen corresponding path program 1 times [2021-11-12 23:05:10,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:10,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905426992] [2021-11-12 23:05:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:10,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:10,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:10,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:10,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:05:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:05:10,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:10,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:10,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:10,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:10,739 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:05:10,740 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 [2021-11-12 23:05:10,815 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:05:10,816 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 [2021-11-12 23:05:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:10,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:11,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:11,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905426992] [2021-11-12 23:05:11,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905426992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:11,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:11,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:05:11,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346628106] [2021-11-12 23:05:11,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:11,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:05:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:05:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:05:11,169 INFO L87 Difference]: Start difference. First operand 278 states and 343 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) [2021-11-12 23:05:15,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:18,621 INFO L93 Difference]: Finished difference Result 561 states and 672 transitions. [2021-11-12 23:05:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:05:18,622 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 [2021-11-12 23:05:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:18,624 INFO L225 Difference]: With dead ends: 561 [2021-11-12 23:05:18,624 INFO L226 Difference]: Without dead ends: 418 [2021-11-12 23:05:18,625 INFO L932 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 [2021-11-12 23:05:18,626 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 318 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7153.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7354.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 598 Invalid, 153 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 7354.80ms Time] [2021-11-12 23:05:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-12 23:05:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 277. [2021-11-12 23:05:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 271 states have (on average 1.2361623616236161) internal successors, (335), 272 states have internal predecessors, (335), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 341 transitions. [2021-11-12 23:05:18,642 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 341 transitions. Word has length 44 [2021-11-12 23:05:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:18,642 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 341 transitions. [2021-11-12 23:05:18,642 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) [2021-11-12 23:05:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 341 transitions. [2021-11-12 23:05:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:05:18,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:18,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:18,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:18,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:18,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1792852115, now seen corresponding path program 1 times [2021-11-12 23:05:18,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:18,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129394837] [2021-11-12 23:05:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:18,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:18,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:18,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:05:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:05:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:05:19,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:05:19,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:19,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129394837] [2021-11-12 23:05:19,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129394837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:19,595 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:19,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:05:19,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647655183] [2021-11-12 23:05:19,596 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:19,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:05:19,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:19,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:05:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:19,597 INFO L87 Difference]: Start difference. First operand 277 states and 341 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:05:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:19,727 INFO L93 Difference]: Finished difference Result 553 states and 687 transitions. [2021-11-12 23:05:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2021-11-12 23:05:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:19,729 INFO L225 Difference]: With dead ends: 553 [2021-11-12 23:05:19,730 INFO L226 Difference]: Without dead ends: 285 [2021-11-12 23:05:19,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:05:19,731 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 196 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:19,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 415 Invalid, 69 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 104.72ms Time] [2021-11-12 23:05:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-12 23:05:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2021-11-12 23:05:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 277 states have (on average 1.1732851985559567) internal successors, (325), 278 states have internal predecessors, (325), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:05:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 331 transitions. [2021-11-12 23:05:19,745 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 331 transitions. Word has length 77 [2021-11-12 23:05:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:19,746 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 331 transitions. [2021-11-12 23:05:19,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:05:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 331 transitions. [2021-11-12 23:05:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:05:19,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:19,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:19,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:19,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:19,965 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -781422495, now seen corresponding path program 1 times [2021-11-12 23:05:19,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:19,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202185795] [2021-11-12 23:05:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:19,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:19,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:05:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:20,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:05:20,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:20,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:20,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:20,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202185795] [2021-11-12 23:05:20,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202185795] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:05:20,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:05:20,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 23:05:20,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273084931] [2021-11-12 23:05:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:20,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:05:20,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:05:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:05:20,649 INFO L87 Difference]: Start difference. First operand 283 states and 331 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:05:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:20,704 INFO L93 Difference]: Finished difference Result 524 states and 619 transitions. [2021-11-12 23:05:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:20,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2021-11-12 23:05:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:20,711 INFO L225 Difference]: With dead ends: 524 [2021-11-12 23:05:20,711 INFO L226 Difference]: Without dead ends: 286 [2021-11-12 23:05:20,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:20,713 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:20,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 617 Invalid, 13 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 32.59ms Time] [2021-11-12 23:05:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-12 23:05:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-11-12 23:05:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 279 states have (on average 1.1756272401433692) internal successors, (328), 281 states have internal predecessors, (328), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:05:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 335 transitions. [2021-11-12 23:05:20,744 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 335 transitions. Word has length 77 [2021-11-12 23:05:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:20,745 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 335 transitions. [2021-11-12 23:05:20,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:05:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 335 transitions. [2021-11-12 23:05:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:05:20,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:20,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:20,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:20,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:20,963 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2105726081, now seen corresponding path program 1 times [2021-11-12 23:05:20,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:20,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685629399] [2021-11-12 23:05:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:20,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:20,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:20,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:20,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:05:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:21,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:21,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:21,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685629399] [2021-11-12 23:05:21,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685629399] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:21,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [96475913] [2021-11-12 23:05:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:21,690 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:21,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:05:21,697 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:05:21,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:05:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:22,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:22,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:22,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [96475913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:22,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566779484] [2021-11-12 23:05:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:22,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:05:22,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:05:22,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:05:22,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:05:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:22,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:05:22,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:22,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:22,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:22,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:05:22,948 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:05:22,949 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 [2021-11-12 23:05:23,057 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:05:23,058 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 [2021-11-12 23:05:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:05:23,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:05:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566779484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:23,316 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:05:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-12 23:05:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211212936] [2021-11-12 23:05:23,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:23,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:05:23,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:05:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:05:23,319 INFO L87 Difference]: Start difference. First operand 286 states and 335 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:05:27,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:30,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:30,307 INFO L93 Difference]: Finished difference Result 427 states and 498 transitions. [2021-11-12 23:05:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:05:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-12 23:05:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:30,312 INFO L225 Difference]: With dead ends: 427 [2021-11-12 23:05:30,312 INFO L226 Difference]: Without dead ends: 423 [2021-11-12 23:05:30,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:30,314 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 287 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6692.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6875.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:30,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 588 Invalid, 132 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 1 Unknown, 0 Unchecked, 6875.32ms Time] [2021-11-12 23:05:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-12 23:05:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 288. [2021-11-12 23:05:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 281 states have (on average 1.1743772241992882) internal successors, (330), 283 states have internal predecessors, (330), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:05:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 337 transitions. [2021-11-12 23:05:30,335 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 337 transitions. Word has length 79 [2021-11-12 23:05:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:30,335 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 337 transitions. [2021-11-12 23:05:30,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:05:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 337 transitions. [2021-11-12 23:05:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 23:05:30,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:30,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:30,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:30,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:30,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:30,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:30,942 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1620167963, now seen corresponding path program 1 times [2021-11-12 23:05:30,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:30,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092047569] [2021-11-12 23:05:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:30,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:30,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:30,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:05:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:31,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:31,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:31,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:31,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092047569] [2021-11-12 23:05:31,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092047569] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:31,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [548598437] [2021-11-12 23:05:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:31,985 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:31,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:05:31,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:05:32,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:05:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:32,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:05:32,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:05:32,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:05:33,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [548598437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:33,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:05:33,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-12 23:05:33,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220290307] [2021-11-12 23:05:33,268 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:33,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:05:33,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:05:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:05:33,270 INFO L87 Difference]: Start difference. First operand 288 states and 337 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:05:35,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:38,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:38,577 INFO L93 Difference]: Finished difference Result 613 states and 722 transitions. [2021-11-12 23:05:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:38,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-11-12 23:05:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:38,583 INFO L225 Difference]: With dead ends: 613 [2021-11-12 23:05:38,583 INFO L226 Difference]: Without dead ends: 370 [2021-11-12 23:05:38,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:05:38,585 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 379 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5102.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5259.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:38,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 343 Invalid, 84 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 1 Unknown, 0 Unchecked, 5259.56ms Time] [2021-11-12 23:05:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-12 23:05:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 363. [2021-11-12 23:05:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 356 states have (on average 1.1797752808988764) internal successors, (420), 358 states have internal predecessors, (420), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:05:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 427 transitions. [2021-11-12 23:05:38,605 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 427 transitions. Word has length 113 [2021-11-12 23:05:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:38,606 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 427 transitions. [2021-11-12 23:05:38,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:05:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 427 transitions. [2021-11-12 23:05:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:05:38,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:38,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:38,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:38,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-12 23:05:39,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:39,013 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1462820267, now seen corresponding path program 1 times [2021-11-12 23:05:39,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:39,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145560527] [2021-11-12 23:05:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:39,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:39,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:39,016 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:05:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:39,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:39,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:39,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:40,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:40,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145560527] [2021-11-12 23:05:40,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145560527] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:40,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1860073169] [2021-11-12 23:05:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:40,002 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:05:40,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:05:40,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:05:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:40,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:05:40,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:40,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1860073169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:40,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230161645] [2021-11-12 23:05:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:40,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:05:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:05:40,883 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:05:40,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 23:05:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:41,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:41,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:41,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:05:41,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230161645] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:41,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:05:41,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 23:05:41,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596559683] [2021-11-12 23:05:41,630 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:05:41,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:05:41,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:41,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:05:41,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:05:41,632 INFO L87 Difference]: Start difference. First operand 363 states and 427 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:05:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:41,991 INFO L93 Difference]: Finished difference Result 693 states and 827 transitions. [2021-11-12 23:05:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:41,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2021-11-12 23:05:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:41,995 INFO L225 Difference]: With dead ends: 693 [2021-11-12 23:05:41,995 INFO L226 Difference]: Without dead ends: 378 [2021-11-12 23:05:41,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:05:41,997 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 51 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:41,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1018 Invalid, 98 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [32 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 157.23ms Time] [2021-11-12 23:05:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-12 23:05:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2021-11-12 23:05:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 366 states have (on average 1.1967213114754098) internal successors, (438), 368 states have internal predecessors, (438), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:05:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 445 transitions. [2021-11-12 23:05:42,019 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 445 transitions. Word has length 120 [2021-11-12 23:05:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:42,019 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 445 transitions. [2021-11-12 23:05:42,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:05:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 445 transitions. [2021-11-12 23:05:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-12 23:05:42,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:42,022 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:42,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:42,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:42,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:42,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:05:42,640 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1307029709, now seen corresponding path program 2 times [2021-11-12 23:05:42,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:42,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960623814] [2021-11-12 23:05:42,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:05:42,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:42,642 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:42,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:05:43,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:05:43,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:05:43,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:05:43,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:05:43,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:05:43,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:43,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960623814] [2021-11-12 23:05:43,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960623814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:43,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [776032182] [2021-11-12 23:05:43,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:05:43,816 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:05:43,817 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:05:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:05:44,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:05:44,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:05:44,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:05:44,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:05:44,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:05:45,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [776032182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:45,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9840421] [2021-11-12 23:05:45,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:05:45,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:05:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:05:45,063 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:05:45,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 23:05:45,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:05:45,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:05:45,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:05:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:05:45,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:05:46,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9840421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:46,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:05:46,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-12 23:05:46,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546029887] [2021-11-12 23:05:46,291 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:05:46,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 23:05:46,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 23:05:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:05:46,293 INFO L87 Difference]: Start difference. First operand 374 states and 445 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 23:05:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:47,394 INFO L93 Difference]: Finished difference Result 711 states and 852 transitions. [2021-11-12 23:05:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:05:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2021-11-12 23:05:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:47,398 INFO L225 Difference]: With dead ends: 711 [2021-11-12 23:05:47,398 INFO L226 Difference]: Without dead ends: 387 [2021-11-12 23:05:47,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 23:05:47,401 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 70 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 462.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:47,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1657 Invalid, 279 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [55 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 462.92ms Time] [2021-11-12 23:05:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-12 23:05:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2021-11-12 23:05:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 373 states have (on average 1.193029490616622) internal successors, (445), 375 states have internal predecessors, (445), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:05:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 452 transitions. [2021-11-12 23:05:47,432 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 452 transitions. Word has length 126 [2021-11-12 23:05:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:47,432 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 452 transitions. [2021-11-12 23:05:47,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 23:05:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 452 transitions. [2021-11-12 23:05:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:05:47,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:47,435 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:47,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:47,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-12 23:05:47,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:48,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:05:48,050 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash 188765531, now seen corresponding path program 3 times [2021-11-12 23:05:48,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:48,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958089211] [2021-11-12 23:05:48,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:05:48,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:48,053 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:48,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:05:52,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:05:52,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:05:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:05:52,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:05:53,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:05:54,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:54,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958089211] [2021-11-12 23:05:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958089211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:05:54,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1430969274] [2021-11-12 23:05:54,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:05:54,094 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:05:54,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:05:54,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:07:09,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:07:09,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:07:09,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:07:09,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:07:10,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:07:10,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1430969274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:10,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59178634] [2021-11-12 23:07:10,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:07:10,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:07:10,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:07:10,571 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:07:10,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6277856a-640d-41bd-880b-e12e74487678/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process