./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:33,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:33,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:33,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:33,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:33,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:33,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:33,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:33,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:33,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:33,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:33,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:33,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:33,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:33,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:33,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:33,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:33,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:33,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:33,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:33,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:33,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:33,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:33,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:33,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:33,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:33,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:33,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:33,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:33,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:33,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:33,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:33,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:33,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:33,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:33,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:33,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:33,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:33,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:33,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:33,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:33,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:04:33,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:33,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:33,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:33,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:33,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:33,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:33,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:33,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:04:33,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:33,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:33,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:04:33,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:04:33,837 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:33,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:04:33,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:04:33,838 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:04:33,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:33,839 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:04:33,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:04:33,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:04:33,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:33,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:33,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:33,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:33,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:33,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:04:33,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:33,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:33,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:33,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:33,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:33,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:33,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:33,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:33,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:33,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:04:33,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:04:33,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:33,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:33,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:33,846 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-19 15:04:34,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:34,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:34,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:34,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:34,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:34,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-19 15:04:34,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/e32c58a3c/487e51af427d4f8f9362ee08c433eded/FLAG89563b6fa [2021-11-19 15:04:35,070 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:35,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-19 15:04:35,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/e32c58a3c/487e51af427d4f8f9362ee08c433eded/FLAG89563b6fa [2021-11-19 15:04:35,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/e32c58a3c/487e51af427d4f8f9362ee08c433eded [2021-11-19 15:04:35,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:35,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:35,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:35,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:35,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:35,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:35" (1/1) ... [2021-11-19 15:04:35,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5afb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:35, skipping insertion in model container [2021-11-19 15:04:35,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:35" (1/1) ... [2021-11-19 15:04:35,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:35,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:35,966 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-19 15:04:36,042 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:36,052 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 15:04:36,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40115e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:36, skipping insertion in model container [2021-11-19 15:04:36,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:36,054 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:04:36,056 INFO L158 Benchmark]: Toolchain (without parser) took 705.34ms. Allocated memory is still 96.5MB. Free memory was 53.7MB in the beginning and 66.0MB in the end (delta: -12.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-19 15:04:36,057 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:04:36,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 697.91ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 66.0MB in the end (delta: -12.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-19 15:04:36,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 697.91ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 66.0MB in the end (delta: -12.5MB). Peak memory consumption was 4.4MB. 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:38,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:38,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:38,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:38,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:38,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:38,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:38,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:38,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:38,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:38,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:38,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:38,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:38,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:38,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:38,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:38,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:38,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:38,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:38,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:38,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:38,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:38,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:38,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:38,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:38,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:38,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:38,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:38,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:38,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:38,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:38,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:38,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:38,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:38,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:38,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:38,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:38,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:38,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:38,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:38,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:38,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:04:39,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:39,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:39,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:39,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:39,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:39,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:39,034 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:39,034 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:39,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:39,036 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:39,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:39,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:04:39,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:04:39,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:39,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:39,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:39,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:39,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:39,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:04:39,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:04:39,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:04:39,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:39,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:39,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:39,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:39,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:04:39,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:39,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:39,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:39,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:39,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:39,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:04:39,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:39,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:39,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:39,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:39,046 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-19 15:04:39,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:39,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:39,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:39,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:39,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:39,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-19 15:04:39,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/f6d301fa9/9dc5c274efdf4efe9b14067c9733aece/FLAGed6ecaa15 [2021-11-19 15:04:40,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:40,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-19 15:04:40,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/f6d301fa9/9dc5c274efdf4efe9b14067c9733aece/FLAGed6ecaa15 [2021-11-19 15:04:40,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/data/f6d301fa9/9dc5c274efdf4efe9b14067c9733aece [2021-11-19 15:04:40,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:40,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:40,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:40,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:40,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:40,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:40" (1/1) ... [2021-11-19 15:04:40,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6039c53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:40, skipping insertion in model container [2021-11-19 15:04:40,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:40" (1/1) ... [2021-11-19 15:04:40,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:40,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:41,311 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-19 15:04:41,496 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:41,514 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:04:41,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:41,578 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-19 15:04:41,698 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:41,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:04:41,761 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_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-19 15:04:41,869 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:41,925 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:04:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41 WrapperNode [2021-11-19 15:04:41,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:41,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:41,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:04:41,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:04:41,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:41,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,060 INFO L137 Inliner]: procedures = 180, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 622 [2021-11-19 15:04:42,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:42,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:04:42,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:04:42,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:04:42,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:04:42,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:04:42,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:04:42,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:04:42,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:42,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:04:42,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:04:42,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:04:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:04:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:04:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:04:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:04:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:04:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:04:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:04:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:04:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:04:42,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:04:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:04:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:04:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:04:42,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:04:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:04:42,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:04:42,556 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:04:42,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:04:48,456 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:04:48,476 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:04:48,476 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-19 15:04:48,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:48 BoogieIcfgContainer [2021-11-19 15:04:48,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:04:48,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:04:48,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:04:48,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:04:48,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:04:40" (1/3) ... [2021-11-19 15:04:48,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e70a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:48, skipping insertion in model container [2021-11-19 15:04:48,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41" (2/3) ... [2021-11-19 15:04:48,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e70a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:48, skipping insertion in model container [2021-11-19 15:04:48,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:48" (3/3) ... [2021-11-19 15:04:48,497 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-19 15:04:48,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:04:48,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:04:48,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:04:48,601 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 15:04:48,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:04:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 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 15:04:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 15:04:48,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:48,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:04:48,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -388532060, now seen corresponding path program 1 times [2021-11-19 15:04:48,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:48,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562486113] [2021-11-19 15:04:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:48,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:48,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:48,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:48,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:04:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:48,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:04:48,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:04:48,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:49,063 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 15:04:49,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:49,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562486113] [2021-11-19 15:04:49,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562486113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:49,065 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 15:04:49,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575856203] [2021-11-19 15:04:49,070 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:49,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:49,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:04:49,119 INFO L87 Difference]: Start difference. First operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 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 15:04:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:49,511 INFO L93 Difference]: Finished difference Result 342 states and 582 transitions. [2021-11-19 15:04:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:49,519 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 15:04:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:49,538 INFO L225 Difference]: With dead ends: 342 [2021-11-19 15:04:49,538 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 15:04:49,546 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 15:04:49,552 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 214 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:49,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 404 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:04:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 15:04:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-19 15:04:49,619 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 15:04:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2021-11-19 15:04:49,627 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 10 [2021-11-19 15:04:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:49,627 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2021-11-19 15:04:49,628 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 15:04:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2021-11-19 15:04:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:04:49,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:49,637 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 15:04:49,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:04:49,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:49,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash -557342268, now seen corresponding path program 1 times [2021-11-19 15:04:49,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:49,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090902105] [2021-11-19 15:04:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:49,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:49,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:49,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:04:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:50,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:50,770 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 15:04:50,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:51,197 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 15:04:51,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:51,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090902105] [2021-11-19 15:04:51,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090902105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:51,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:51,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:04:51,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225327720] [2021-11-19 15:04:51,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:51,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:51,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:51,203 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 15:04:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:51,441 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2021-11-19 15:04:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:51,442 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 15:04:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:51,445 INFO L225 Difference]: With dead ends: 424 [2021-11-19 15:04:51,445 INFO L226 Difference]: Without dead ends: 220 [2021-11-19 15:04:51,447 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 15:04:51,449 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 15:04:51,450 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 15:04:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-19 15:04:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-19 15:04:51,477 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 15:04:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2021-11-19 15:04:51,485 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 112 [2021-11-19 15:04:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:51,486 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2021-11-19 15:04:51,486 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 15:04:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2021-11-19 15:04:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 15:04:51,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:51,499 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 15:04:51,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:51,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:51,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:51,713 INFO L85 PathProgramCache]: Analyzing trace with hash -528462268, now seen corresponding path program 1 times [2021-11-19 15:04:51,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:51,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943359445] [2021-11-19 15:04:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:51,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:51,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:51,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:51,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:04:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:52,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:52,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:52,826 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 15:04:52,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:53,418 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 15:04:53,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:53,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943359445] [2021-11-19 15:04:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943359445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:53,419 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:53,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:04:53,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719380598] [2021-11-19 15:04:53,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:04:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:04:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:04:53,422 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 15:04:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:53,901 INFO L93 Difference]: Finished difference Result 381 states and 490 transitions. [2021-11-19 15:04:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:04:53,902 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 15:04:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:53,905 INFO L225 Difference]: With dead ends: 381 [2021-11-19 15:04:53,906 INFO L226 Difference]: Without dead ends: 216 [2021-11-19 15:04:53,907 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 15:04:53,909 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:53,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:04:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-19 15:04:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-19 15:04:53,935 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 15:04:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-19 15:04:53,938 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 112 [2021-11-19 15:04:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:53,939 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-19 15:04:53,939 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 15:04:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-19 15:04:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:04:53,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:53,942 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 15:04:53,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:54,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:54,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1997933147, now seen corresponding path program 1 times [2021-11-19 15:04:54,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:54,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601269532] [2021-11-19 15:04:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:54,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:54,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:54,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:04:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:54,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:04:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:54,938 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 15:04:54,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:55,391 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 15:04:55,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:55,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601269532] [2021-11-19 15:04:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601269532] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:55,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 15:04:55,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576765225] [2021-11-19 15:04:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:55,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:04:55,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:04:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:04:55,395 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 15:04:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:55,466 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-11-19 15:04:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:04:55,468 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 15:04:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:55,472 INFO L225 Difference]: With dead ends: 388 [2021-11-19 15:04:55,473 INFO L226 Difference]: Without dead ends: 219 [2021-11-19 15:04:55,477 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 15:04:55,481 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 15:04:55,482 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 15:04:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-19 15:04:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-19 15:04:55,511 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 15:04:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2021-11-19 15:04:55,514 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 127 [2021-11-19 15:04:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:55,514 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2021-11-19 15:04:55,514 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 15:04:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2021-11-19 15:04:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 15:04:55,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:55,516 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 15:04:55,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:55,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:55,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1311171193, now seen corresponding path program 1 times [2021-11-19 15:04:55,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:55,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373786742] [2021-11-19 15:04:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:55,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:55,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:55,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:55,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:04:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:56,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:56,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:56,525 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 15:04:56,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:56,966 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 15:04:56,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:56,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373786742] [2021-11-19 15:04:56,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373786742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:04:56,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1867042628] [2021-11-19 15:04:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:56,967 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:04:56,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:04:56,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 15:04:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:57,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:57,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:57,914 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 15:04:57,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:58,305 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 15:04:58,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1867042628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:04:58,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590331503] [2021-11-19 15:04:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:58,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:04:58,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:04:58,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:04:58,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 15:04:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:58,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:59,227 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 15:04:59,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:00,024 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 15:05:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590331503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:00,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:05:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-19 15:05:00,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189348673] [2021-11-19 15:05:00,026 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:05:00,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:05:00,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:05:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:05:00,031 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 15:05:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:02,911 INFO L93 Difference]: Finished difference Result 762 states and 987 transitions. [2021-11-19 15:05:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 15:05:02,912 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 15:05:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:02,917 INFO L225 Difference]: With dead ends: 762 [2021-11-19 15:05:02,918 INFO L226 Difference]: Without dead ends: 590 [2021-11-19 15:05:02,919 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 15:05:02,920 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 900 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:02,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2701 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 15:05:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-19 15:05:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2021-11-19 15:05:02,956 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 15:05:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 732 transitions. [2021-11-19 15:05:02,961 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 732 transitions. Word has length 129 [2021-11-19 15:05:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:02,962 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 732 transitions. [2021-11-19 15:05:02,963 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 15:05:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 732 transitions. [2021-11-19 15:05:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-19 15:05:02,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:02,970 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 15:05:02,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:03,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:03,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-19 15:05:03,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:05:03,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1182299, now seen corresponding path program 2 times [2021-11-19 15:05:03,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:03,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600049343] [2021-11-19 15:05:03,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:03,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:03,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:03,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:05:04,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:04,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:04,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:05:04,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:05,318 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 15:05:05,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:06,548 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 15:05:06,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:06,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600049343] [2021-11-19 15:05:06,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600049343] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:06,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597566291] [2021-11-19 15:05:06,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:06,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:05:06,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:05:06,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:05:07,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:07,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:07,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:05:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:08,524 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 15:05:08,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:09,434 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 15:05:09,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1597566291] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:09,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318158626] [2021-11-19 15:05:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:09,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:05:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:05:09,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:05:09,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 15:05:10,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:10,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:10,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:05:10,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:10,902 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 15:05:10,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:11,856 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 15:05:11,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318158626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:05:11,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:05:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2021-11-19 15:05:11,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799303921] [2021-11-19 15:05:11,857 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:05:11,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 15:05:11,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 15:05:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:05:11,863 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 15:05:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:13,356 INFO L93 Difference]: Finished difference Result 1155 states and 1509 transitions. [2021-11-19 15:05:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 15:05:13,358 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 15:05:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:13,364 INFO L225 Difference]: With dead ends: 1155 [2021-11-19 15:05:13,364 INFO L226 Difference]: Without dead ends: 608 [2021-11-19 15:05:13,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1998 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 15:05:13,369 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 147 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:13,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1400 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:05:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-19 15:05:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 600. [2021-11-19 15:05:13,402 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 15:05:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 748 transitions. [2021-11-19 15:05:13,408 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 748 transitions. Word has length 337 [2021-11-19 15:05:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:13,408 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 748 transitions. [2021-11-19 15:05:13,409 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 15:05:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 748 transitions. [2021-11-19 15:05:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-19 15:05:13,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:13,418 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 15:05:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:13,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:13,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:14,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:14,032 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1718210971, now seen corresponding path program 3 times [2021-11-19 15:05:14,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:14,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230869016] [2021-11-19 15:05:14,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:05:14,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:14,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:14,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f4a8841-aeeb-4b14-8761-04b34e0fe2bb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process