./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs --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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:21:46,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:21:46,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:21:46,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:21:46,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:21:46,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:21:46,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:21:46,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:21:46,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:21:46,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:21:46,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:21:46,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:21:46,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:21:46,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:21:46,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:21:46,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:21:46,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:21:46,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:21:46,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:21:46,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:21:46,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:21:46,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:21:46,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:21:46,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:21:46,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:21:46,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:21:46,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:21:46,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:21:46,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:21:46,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:21:46,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:21:46,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:21:46,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:21:46,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:21:46,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:21:46,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:21:46,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:21:46,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:21:46,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:21:46,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:21:46,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:21:46,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:21:46,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:21:46,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:21:46,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:21:46,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:21:46,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:21:46,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:21:46,854 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:21:46,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:21:46,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:21:46,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:21:46,854 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:21:46,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:21:46,855 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:21:46,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:21:46,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:21:46,856 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:21:46,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:21:46,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:21:46,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:21:46,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:21:46,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:21:46,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:21:46,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:21:46,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:21:46,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:21:46,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:21:46,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:21:46,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:21:46,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:21:46,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:21:46,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:21:46,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:46,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:21:46,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:21:46,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:21:46,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:21:46,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:21:46,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:21:46,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:21:46,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:21:46,862 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_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2021-11-19 13:21:47,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:21:47,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:21:47,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:21:47,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:21:47,204 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:21:47,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-19 13:21:47,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/4fd743d67/abab87973d4b46cab1a8214270927498/FLAG3cc9e18ab [2021-11-19 13:21:47,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:21:47,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-19 13:21:47,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/4fd743d67/abab87973d4b46cab1a8214270927498/FLAG3cc9e18ab [2021-11-19 13:21:48,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/4fd743d67/abab87973d4b46cab1a8214270927498 [2021-11-19 13:21:48,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:21:48,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:21:48,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:48,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:21:48,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:21:48,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:48" (1/1) ... [2021-11-19 13:21:48,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3837ab81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:48, skipping insertion in model container [2021-11-19 13:21:48,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:48" (1/1) ... [2021-11-19 13:21:48,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:21:48,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:48,754 WARN L230 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_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-19 13:21:48,887 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:48,900 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) [2021-11-19 13:21:48,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bf62905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:48, skipping insertion in model container [2021-11-19 13:21:48,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:48,901 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:21:48,903 INFO L158 Benchmark]: Toolchain (without parser) took 749.51ms. Allocated memory is still 132.1MB. Free memory was 93.2MB in the beginning and 97.3MB in the end (delta: -4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:21:48,904 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 102.3MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:21:48,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.31ms. Allocated memory is still 132.1MB. Free memory was 93.2MB in the beginning and 97.3MB in the end (delta: -4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:21:48,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 102.3MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.31ms. Allocated memory is still 132.1MB. Free memory was 93.2MB in the beginning and 97.3MB in the end (delta: -4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs --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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:21:51,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:21:51,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:21:51,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:21:51,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:21:51,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:21:51,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:21:51,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:21:51,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:21:51,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:21:51,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:21:51,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:21:51,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:21:51,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:21:51,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:21:51,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:21:51,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:21:51,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:21:51,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:21:51,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:21:51,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:21:51,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:21:51,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:21:51,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:21:51,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:21:51,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:21:51,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:21:51,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:21:51,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:21:51,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:21:51,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:21:51,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:21:51,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:21:51,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:21:51,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:21:51,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:21:51,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:21:51,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:21:51,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:21:51,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:21:51,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:21:51,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:21:51,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:21:51,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:21:51,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:21:51,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:21:51,583 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:21:51,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:21:51,584 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:21:51,584 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:21:51,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:21:51,585 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:21:51,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:21:51,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:21:51,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:21:51,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:21:51,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:21:51,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:21:51,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:21:51,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:21:51,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:21:51,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:21:51,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:21:51,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:21:51,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:21:51,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:21:51,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:21:51,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:21:51,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:21:51,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:51,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:21:51,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:21:51,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:21:51,594 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:21:51,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:51,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:21:51,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:21:51,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:21:51,596 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_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2021-11-19 13:21:52,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:21:52,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:21:52,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:21:52,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:21:52,091 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:21:52,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-19 13:21:52,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/292366ef9/1e4b218ff82846f49a028981658f296b/FLAG6e40d8b2e [2021-11-19 13:21:52,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:21:52,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-19 13:21:53,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/292366ef9/1e4b218ff82846f49a028981658f296b/FLAG6e40d8b2e [2021-11-19 13:21:53,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/data/292366ef9/1e4b218ff82846f49a028981658f296b [2021-11-19 13:21:53,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:21:53,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:21:53,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:53,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:21:53,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:21:53,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:53" (1/1) ... [2021-11-19 13:21:53,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da2a503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:53, skipping insertion in model container [2021-11-19 13:21:53,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:53" (1/1) ... [2021-11-19 13:21:53,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:21:53,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:53,821 WARN L230 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_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-19 13:21:54,008 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:54,038 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:21:54,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:54,093 WARN L230 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_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-19 13:21:54,230 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:54,239 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:21:54,286 WARN L230 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_08194af7-e508-4ec0-adb4-860d0af34035/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-19 13:21:54,370 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:54,439 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:21:54,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54 WrapperNode [2021-11-19 13:21:54,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:54,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:21:54,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:21:54,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:21:54,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,585 INFO L137 Inliner]: procedures = 180, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 777 [2021-11-19 13:21:54,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:21:54,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:21:54,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:21:54,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:21:54,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:21:54,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:21:54,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:21:54,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:21:54,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (1/1) ... [2021-11-19 13:21:54,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:21:54,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:21:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:21:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:21:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:21:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:21:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:21:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:21:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:21:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:21:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:21:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:21:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:21:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:21:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:21:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:21:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:21:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:21:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:21:55,135 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:21:55,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:22:00,487 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:22:00,497 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:22:00,497 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-19 13:22:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:22:00 BoogieIcfgContainer [2021-11-19 13:22:00,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:22:00,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:22:00,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:22:00,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:22:00,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:21:53" (1/3) ... [2021-11-19 13:22:00,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ad342b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:22:00, skipping insertion in model container [2021-11-19 13:22:00,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:54" (2/3) ... [2021-11-19 13:22:00,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ad342b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:22:00, skipping insertion in model container [2021-11-19 13:22:00,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:22:00" (3/3) ... [2021-11-19 13:22:00,510 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2021-11-19 13:22:00,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:22:00,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:22:00,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:22:00,581 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 [2021-11-19 13:22:00,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:22:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 151 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 13:22:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 13:22:00,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:00,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:00,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -384684060, now seen corresponding path program 1 times [2021-11-19 13:22:00,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:00,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994175563] [2021-11-19 13:22:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:00,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:00,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:00,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:22:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:00,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:00,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:00,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:00,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:00,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994175563] [2021-11-19 13:22:00,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994175563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:00,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:00,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:00,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496830688] [2021-11-19 13:22:00,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:00,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:00,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:01,029 INFO L87 Difference]: Start difference. First operand has 157 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 151 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:01,360 INFO L93 Difference]: Finished difference Result 400 states and 680 transitions. [2021-11-19 13:22:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 13:22:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:01,378 INFO L225 Difference]: With dead ends: 400 [2021-11-19 13:22:01,378 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 13:22:01,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:01,387 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 292 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:01,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:22:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 13:22:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-19 13:22:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 203 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:22:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2021-11-19 13:22:01,455 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 10 [2021-11-19 13:22:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:01,456 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2021-11-19 13:22:01,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2021-11-19 13:22:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:22:01,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:01,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:01,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:01,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:01,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:01,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash -553494268, now seen corresponding path program 1 times [2021-11-19 13:22:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:01,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395099536] [2021-11-19 13:22:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:01,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:01,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:01,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:01,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:22:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:02,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:02,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 13:22:02,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 13:22:03,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:03,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395099536] [2021-11-19 13:22:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395099536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:03,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:03,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:22:03,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000069543] [2021-11-19 13:22:03,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:03,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:03,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:22:03,034 INFO L87 Difference]: Start difference. First operand 212 states and 286 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:03,274 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2021-11-19 13:22:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:03,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 13:22:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:03,279 INFO L225 Difference]: With dead ends: 424 [2021-11-19 13:22:03,280 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 13:22:03,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:22:03,287 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 235 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:03,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 313 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:22:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 13:22:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-19 13:22:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 209 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:22:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2021-11-19 13:22:03,321 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 112 [2021-11-19 13:22:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:03,322 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2021-11-19 13:22:03,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2021-11-19 13:22:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:22:03,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:03,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:03,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:03,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:03,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -524614268, now seen corresponding path program 1 times [2021-11-19 13:22:03,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:03,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057349007] [2021-11-19 13:22:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:03,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:03,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:03,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:03,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:22:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:03,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:03,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 13:22:04,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 13:22:05,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:05,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057349007] [2021-11-19 13:22:05,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057349007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:05,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:05,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:22:05,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125673210] [2021-11-19 13:22:05,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:05,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:22:05,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:22:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:22:05,266 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:05,841 INFO L93 Difference]: Finished difference Result 381 states and 490 transitions. [2021-11-19 13:22:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:22:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-19 13:22:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:05,844 INFO L225 Difference]: With dead ends: 381 [2021-11-19 13:22:05,844 INFO L226 Difference]: Without dead ends: 216 [2021-11-19 13:22:05,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:22:05,847 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:05,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:22:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-19 13:22:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-19 13:22:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 207 states have internal predecessors, (241), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:22:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-19 13:22:05,874 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 112 [2021-11-19 13:22:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:05,874 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-19 13:22:05,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-19 13:22:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 13:22:05,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:05,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:05,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:06,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:06,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash -306490843, now seen corresponding path program 1 times [2021-11-19 13:22:06,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:06,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610492224] [2021-11-19 13:22:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:06,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:06,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:06,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:22:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:06,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 13:22:07,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:22:07,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:07,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610492224] [2021-11-19 13:22:07,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610492224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:07,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:22:07,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 13:22:07,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968209116] [2021-11-19 13:22:07,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:07,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:07,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:22:07,483 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 13:22:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:07,553 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-11-19 13:22:07,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 127 [2021-11-19 13:22:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:07,557 INFO L225 Difference]: With dead ends: 388 [2021-11-19 13:22:07,557 INFO L226 Difference]: Without dead ends: 219 [2021-11-19 13:22:07,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:07,560 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:07,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:22:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-19 13:22:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-19 13:22:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 210 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-19 13:22:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2021-11-19 13:22:07,584 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 127 [2021-11-19 13:22:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:07,585 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2021-11-19 13:22:07,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 13:22:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2021-11-19 13:22:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 13:22:07,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:07,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:07,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:07,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:07,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:07,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2095038329, now seen corresponding path program 1 times [2021-11-19 13:22:07,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:07,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334105426] [2021-11-19 13:22:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:07,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:07,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:07,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:07,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:22:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:08,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:08,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:22:08,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 13:22:09,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:09,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334105426] [2021-11-19 13:22:09,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334105426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:09,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881754262] [2021-11-19 13:22:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:09,135 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:09,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:09,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 13:22:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:09,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:22:10,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 13:22:10,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1881754262] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:10,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548084097] [2021-11-19 13:22:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:10,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:22:10,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:22:10,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:22:10,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:22:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:10,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 13:22:11,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 13:22:12,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548084097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:12,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:22:12,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-19 13:22:12,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054322699] [2021-11-19 13:22:12,369 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:22:12,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:22:12,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:22:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:22:12,372 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:22:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:14,790 INFO L93 Difference]: Finished difference Result 762 states and 987 transitions. [2021-11-19 13:22:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:22:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2021-11-19 13:22:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:14,796 INFO L225 Difference]: With dead ends: 762 [2021-11-19 13:22:14,796 INFO L226 Difference]: Without dead ends: 590 [2021-11-19 13:22:14,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:22:14,799 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 675 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:14,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2113 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 13:22:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-19 13:22:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2021-11-19 13:22:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 555 states have (on average 1.2072072072072073) internal successors, (670), 566 states have internal predecessors, (670), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-19 13:22:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 732 transitions. [2021-11-19 13:22:14,840 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 732 transitions. Word has length 129 [2021-11-19 13:22:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:14,841 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 732 transitions. [2021-11-19 13:22:14,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:22:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 732 transitions. [2021-11-19 13:22:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-19 13:22:14,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:14,850 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2021-11-19 13:22:14,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-19 13:22:15,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:15,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 13:22:15,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:15,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1151924123, now seen corresponding path program 2 times [2021-11-19 13:22:15,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:15,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155532372] [2021-11-19 13:22:15,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:15,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:15,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:15,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:22:16,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:22:16,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:22:16,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:22:16,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-19 13:22:17,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-19 13:22:18,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:18,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155532372] [2021-11-19 13:22:18,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155532372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:18,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678617332] [2021-11-19 13:22:18,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:18,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:18,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:18,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:18,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 13:22:19,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:22:19,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:22:19,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:22:19,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-19 13:22:20,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-19 13:22:21,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678617332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:21,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017454613] [2021-11-19 13:22:21,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:21,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:22:21,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:22:21,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:22:21,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 13:22:21,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:22:21,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:22:21,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:22:21,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-19 13:22:22,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-19 13:22:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017454613] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:23,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:22:23,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2021-11-19 13:22:23,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340943862] [2021-11-19 13:22:23,524 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:22:23,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:22:23,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:22:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:22:23,528 INFO L87 Difference]: Start difference. First operand 588 states and 732 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:22:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:25,196 INFO L93 Difference]: Finished difference Result 1155 states and 1509 transitions. [2021-11-19 13:22:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 13:22:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 337 [2021-11-19 13:22:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:25,208 INFO L225 Difference]: With dead ends: 1155 [2021-11-19 13:22:25,209 INFO L226 Difference]: Without dead ends: 608 [2021-11-19 13:22:25,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1998 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 13:22:25,213 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 133 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:25,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1855 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:22:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-19 13:22:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 600. [2021-11-19 13:22:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 567 states have (on average 1.2098765432098766) internal successors, (686), 578 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-19 13:22:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 748 transitions. [2021-11-19 13:22:25,253 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 748 transitions. Word has length 337 [2021-11-19 13:22:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:25,254 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 748 transitions. [2021-11-19 13:22:25,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:22:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 748 transitions. [2021-11-19 13:22:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-19 13:22:25,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:25,263 INFO L514 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2021-11-19 13:22:25,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:25,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:25,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:25,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:25,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash -829188699, now seen corresponding path program 3 times [2021-11-19 13:22:25,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:25,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026246631] [2021-11-19 13:22:25,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:22:25,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:25,882 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:25,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08194af7-e508-4ec0-adb4-860d0af34035/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process