./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.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_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/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_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/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_00abcbce-0539-4e6b-b3d5-769ed3303cad/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 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:22,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:22,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:22,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:22,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:22,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:22,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:22,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:22,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:22,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:22,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:22,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:22,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:22,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:22,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:22,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:22,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:22,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:22,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:22,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:22,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:22,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:22,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:22,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:22,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:22,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:22,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:22,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:22,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:22,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:22,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:22,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:22,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:22,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:22,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:22,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:22,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:22,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:22,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:22,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:22,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:22,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:00:22,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:22,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:22,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:22,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:22,722 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:22,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:22,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:22,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:00:22,731 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:22,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:22,732 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:00:22,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:00:22,733 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:22,733 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:00:22,733 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:00:22,733 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:00:22,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:22,735 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:00:22,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:22,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:00:22,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:22,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:00:22,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:22,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:00:22,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:22,737 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:00:22,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:00:22,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:22,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:00:22,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:22,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:22,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:22,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:22,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:22,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:22,742 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b [2021-11-19 14:00:23,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:23,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:23,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:23,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:23,026 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:23,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-19 14:00:23,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/5e8caf102/529170a562e1474bb067166d3011def4/FLAG6f3128629 [2021-11-19 14:00:23,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:23,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-19 14:00:23,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/5e8caf102/529170a562e1474bb067166d3011def4/FLAG6f3128629 [2021-11-19 14:00:23,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/5e8caf102/529170a562e1474bb067166d3011def4 [2021-11-19 14:00:23,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:23,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:23,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:23,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:23,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:23,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:23" (1/1) ... [2021-11-19 14:00:23,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149317b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:23, skipping insertion in model container [2021-11-19 14:00:23,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:23" (1/1) ... [2021-11-19 14:00:23,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:24,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:24,440 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-19 14:00:24,581 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-19 14:00:24,587 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:24,595 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 14:00:24,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6bad628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:24, skipping insertion in model container [2021-11-19 14:00:24,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:24,596 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:00:24,598 INFO L158 Benchmark]: Toolchain (without parser) took 672.90ms. Allocated memory is still 157.3MB. Free memory was 119.5MB in the beginning and 123.6MB in the end (delta: -4.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:00:24,599 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:24,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.32ms. Allocated memory is still 157.3MB. Free memory was 119.3MB in the beginning and 123.6MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:00:24,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 670.32ms. Allocated memory is still 157.3MB. Free memory was 119.3MB in the beginning and 123.6MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/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_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/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_00abcbce-0539-4e6b-b3d5-769ed3303cad/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 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:26,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:26,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:26,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:26,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:26,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:26,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:26,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:26,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:26,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:26,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:26,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:26,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:26,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:26,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:26,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:26,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:26,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:26,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:26,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:26,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:26,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:26,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:26,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:26,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:26,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:26,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:26,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:26,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:26,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:26,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:26,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:26,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:26,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:26,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:26,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:26,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:26,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:26,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:26,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:26,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:26,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:00:26,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:26,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:26,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:26,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:26,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:26,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:26,988 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:26,988 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:26,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:26,989 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:26,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:26,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:00:26,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:00:26,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:26,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:00:26,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:26,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:00:26,991 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:26,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:00:26,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:00:26,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:00:26,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:00:26,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:26,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:00:26,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:26,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:00:26,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:26,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:26,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:26,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:26,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:00:26,995 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:00:26,995 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:26,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:00:26,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:26,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:26,996 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b [2021-11-19 14:00:27,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:27,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:27,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:27,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:27,414 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:27,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-19 14:00:27,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/47ed01eaa/4f9c974350924f54a56ed768b0b22152/FLAG39329cbfa [2021-11-19 14:00:28,201 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:28,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-19 14:00:28,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/47ed01eaa/4f9c974350924f54a56ed768b0b22152/FLAG39329cbfa [2021-11-19 14:00:28,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/data/47ed01eaa/4f9c974350924f54a56ed768b0b22152 [2021-11-19 14:00:28,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:28,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:28,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:28,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:28,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:28,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:28" (1/1) ... [2021-11-19 14:00:28,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e90ed47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:28, skipping insertion in model container [2021-11-19 14:00:28,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:28" (1/1) ... [2021-11-19 14:00:28,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:28,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:29,069 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-19 14:00:29,224 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-19 14:00:29,231 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:29,244 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:00:29,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:29,282 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-19 14:00:29,376 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-19 14:00:29,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:29,385 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:00:29,419 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-19 14:00:29,483 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_00abcbce-0539-4e6b-b3d5-769ed3303cad/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-19 14:00:29,486 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:29,542 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:00:29,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29 WrapperNode [2021-11-19 14:00:29,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:29,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:29,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:00:29,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:00:29,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,653 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 884 [2021-11-19 14:00:29,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:29,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:00:29,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:00:29,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:00:29,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:00:29,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:00:29,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:00:29,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:00:29,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (1/1) ... [2021-11-19 14:00:29,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:29,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:00:29,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:00:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:00:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:00:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:00:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:00:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:00:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:00:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:00:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:00:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:00:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:00:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:00:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:00:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:00:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:00:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:00:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:00:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:00:30,072 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:00:30,074 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:00:36,606 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:00:36,615 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:00:36,615 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 14:00:36,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:36 BoogieIcfgContainer [2021-11-19 14:00:36,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:00:36,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:00:36,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:00:36,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:00:36,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:28" (1/3) ... [2021-11-19 14:00:36,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ea9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:36, skipping insertion in model container [2021-11-19 14:00:36,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:29" (2/3) ... [2021-11-19 14:00:36,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ea9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:36, skipping insertion in model container [2021-11-19 14:00:36,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:36" (3/3) ... [2021-11-19 14:00:36,626 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-1.i [2021-11-19 14:00:36,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:00:36,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 14:00:36,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:00:36,691 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 14:00:36,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 14:00:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:00:36,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:36,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:36,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash -858859523, now seen corresponding path program 1 times [2021-11-19 14:00:36,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:36,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135620888] [2021-11-19 14:00:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:36,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:36,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:36,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:00:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:36,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:00:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:37,010 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 14:00:37,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:37,084 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 14:00:37,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:37,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135620888] [2021-11-19 14:00:37,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135620888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:37,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:37,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:00:37,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154620774] [2021-11-19 14:00:37,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:37,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:00:37,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:00:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:37,129 INFO L87 Difference]: Start difference. First operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:37,192 INFO L93 Difference]: Finished difference Result 352 states and 589 transitions. [2021-11-19 14:00:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:00:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 14:00:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:37,209 INFO L225 Difference]: With dead ends: 352 [2021-11-19 14:00:37,212 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 14:00:37,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:37,227 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:37,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 14:00:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-19 14:00:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 167 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2021-11-19 14:00:37,320 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 9 [2021-11-19 14:00:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:37,320 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2021-11-19 14:00:37,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2021-11-19 14:00:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 14:00:37,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:37,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:37,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:37,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash -294026559, now seen corresponding path program 1 times [2021-11-19 14:00:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:37,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689947866] [2021-11-19 14:00:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:37,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:37,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:00:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:37,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:00:37,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:38,006 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 14:00:38,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:38,287 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 14:00:38,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:38,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689947866] [2021-11-19 14:00:38,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689947866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:38,293 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:38,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:00:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072748860] [2021-11-19 14:00:38,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:38,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:38,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:38,303 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:38,590 INFO L93 Difference]: Finished difference Result 260 states and 347 transitions. [2021-11-19 14:00:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 14:00:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:38,597 INFO L225 Difference]: With dead ends: 260 [2021-11-19 14:00:38,597 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 14:00:38,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:38,601 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 70 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:38,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1043 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:00:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 14:00:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-19 14:00:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 164 states have (on average 1.2682926829268293) internal successors, (208), 170 states have internal predecessors, (208), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 224 transitions. [2021-11-19 14:00:38,629 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 224 transitions. Word has length 44 [2021-11-19 14:00:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:38,631 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 224 transitions. [2021-11-19 14:00:38,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 224 transitions. [2021-11-19 14:00:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 14:00:38,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:38,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:38,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:38,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:38,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:38,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1193469581, now seen corresponding path program 1 times [2021-11-19 14:00:38,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:38,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658032165] [2021-11-19 14:00:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:38,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:38,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:38,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:38,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:00:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:38,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:00:38,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:39,179 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 14:00:39,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:39,608 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 14:00:39,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:39,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658032165] [2021-11-19 14:00:39,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658032165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:39,609 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:39,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-19 14:00:39,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542516444] [2021-11-19 14:00:39,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:39,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:00:39,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:00:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:39,611 INFO L87 Difference]: Start difference. First operand 176 states and 224 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:39,761 INFO L93 Difference]: Finished difference Result 256 states and 324 transitions. [2021-11-19 14:00:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 14:00:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:39,764 INFO L225 Difference]: With dead ends: 256 [2021-11-19 14:00:39,764 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 14:00:39,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:39,766 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 121 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:39,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 713 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:00:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 14:00:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-19 14:00:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 158 states have (on average 1.2531645569620253) internal successors, (198), 164 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-11-19 14:00:39,778 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 44 [2021-11-19 14:00:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:39,779 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-11-19 14:00:39,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-11-19 14:00:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 14:00:39,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:39,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:39,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:39,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:39,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -440517769, now seen corresponding path program 1 times [2021-11-19 14:00:39,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:39,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011185332] [2021-11-19 14:00:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:39,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:39,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:40,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:40,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:40,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:40,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:40,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:40,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:40,313 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 14:00:40,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 14:00:40,390 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:00:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 14:00:40,512 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 14:00:40,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:40,678 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 14:00:40,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:40,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011185332] [2021-11-19 14:00:40,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011185332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:40,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:40,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:00:40,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176055978] [2021-11-19 14:00:40,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:40,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:40,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:40,681 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:45,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:47,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:47,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:47,878 INFO L93 Difference]: Finished difference Result 423 states and 530 transitions. [2021-11-19 14:00:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:47,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 14:00:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:47,882 INFO L225 Difference]: With dead ends: 423 [2021-11-19 14:00:47,882 INFO L226 Difference]: Without dead ends: 347 [2021-11-19 14:00:47,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:47,884 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 321 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:47,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 793 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 14:00:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-19 14:00:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 172. [2021-11-19 14:00:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 1.25) internal successors, (200), 166 states have internal predecessors, (200), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 216 transitions. [2021-11-19 14:00:47,904 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 216 transitions. Word has length 44 [2021-11-19 14:00:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:47,905 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 216 transitions. [2021-11-19 14:00:47,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 216 transitions. [2021-11-19 14:00:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:00:47,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:47,909 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:47,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:48,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:48,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:48,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1362911587, now seen corresponding path program 1 times [2021-11-19 14:00:48,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:48,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832836334] [2021-11-19 14:00:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:48,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:48,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:48,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:00:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:48,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:48,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:48,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:48,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832836334] [2021-11-19 14:00:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832836334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:48,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:48,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:00:48,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828959792] [2021-11-19 14:00:48,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:00:48,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:00:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:00:48,970 INFO L87 Difference]: Start difference. First operand 172 states and 216 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:49,117 INFO L93 Difference]: Finished difference Result 349 states and 440 transitions. [2021-11-19 14:00:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:49,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:00:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:49,119 INFO L225 Difference]: With dead ends: 349 [2021-11-19 14:00:49,120 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 14:00:49,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 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 14:00:49,121 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 174 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:49,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 421 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:00:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 14:00:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-19 14:00:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 163 states have (on average 1.196319018404908) internal successors, (195), 169 states have internal predecessors, (195), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 14:00:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-11-19 14:00:49,139 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 96 [2021-11-19 14:00:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:49,141 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-11-19 14:00:49,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2021-11-19 14:00:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:00:49,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:49,149 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:49,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,365 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -725253137, now seen corresponding path program 1 times [2021-11-19 14:00:49,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:49,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284275152] [2021-11-19 14:00:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:49,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:49,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:49,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:00:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:49,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:49,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:50,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:50,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:50,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284275152] [2021-11-19 14:00:50,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284275152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:00:50,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [509981312] [2021-11-19 14:00:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:50,425 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:00:50,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:00:50,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 14:00:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:50,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:50,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:51,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:51,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [509981312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:51,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:00:51,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-11-19 14:00:51,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888569423] [2021-11-19 14:00:51,813 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:51,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:51,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:00:51,814 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:52,519 INFO L93 Difference]: Finished difference Result 480 states and 581 transitions. [2021-11-19 14:00:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:52,522 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:00:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:52,525 INFO L225 Difference]: With dead ends: 480 [2021-11-19 14:00:52,525 INFO L226 Difference]: Without dead ends: 309 [2021-11-19 14:00:52,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:00:52,527 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:52,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 410 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:00:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-19 14:00:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2021-11-19 14:00:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 289 states have (on average 1.1868512110726643) internal successors, (343), 300 states have internal predecessors, (343), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-19 14:00:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 371 transitions. [2021-11-19 14:00:52,546 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 371 transitions. Word has length 96 [2021-11-19 14:00:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:52,546 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 371 transitions. [2021-11-19 14:00:52,547 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 371 transitions. [2021-11-19 14:00:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 14:00:52,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:52,549 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:52,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:52,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:52,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:52,965 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -824366783, now seen corresponding path program 1 times [2021-11-19 14:00:52,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:52,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688304049] [2021-11-19 14:00:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:52,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:52,992 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:53,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:00:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:53,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:53,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:00:54,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:00:54,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:54,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688304049] [2021-11-19 14:00:54,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688304049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:54,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:54,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:00:54,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098212084] [2021-11-19 14:00:54,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:54,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:54,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:54,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:54,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:54,847 INFO L87 Difference]: Start difference. First operand 307 states and 371 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:55,264 INFO L93 Difference]: Finished difference Result 547 states and 648 transitions. [2021-11-19 14:00:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:55,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-19 14:00:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:55,268 INFO L225 Difference]: With dead ends: 547 [2021-11-19 14:00:55,268 INFO L226 Difference]: Without dead ends: 385 [2021-11-19 14:00:55,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 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 14:00:55,270 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 29 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:55,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 422 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:00:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-19 14:00:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-19 14:00:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 365 states have (on average 1.158904109589041) internal successors, (423), 376 states have internal predecessors, (423), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-19 14:00:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 451 transitions. [2021-11-19 14:00:55,291 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 451 transitions. Word has length 103 [2021-11-19 14:00:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:55,291 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 451 transitions. [2021-11-19 14:00:55,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 451 transitions. [2021-11-19 14:00:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 14:00:55,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:55,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:55,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:55,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:55,509 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1015837155, now seen corresponding path program 1 times [2021-11-19 14:00:55,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:55,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107670376] [2021-11-19 14:00:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:55,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:55,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:55,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:55,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:00:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:55,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:55,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:56,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:00:56,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:56,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107670376] [2021-11-19 14:00:56,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107670376] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:56,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:56,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 14:00:56,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539267960] [2021-11-19 14:00:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:56,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:56,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:56,353 INFO L87 Difference]: Start difference. First operand 383 states and 451 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:00:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:56,412 INFO L93 Difference]: Finished difference Result 724 states and 860 transitions. [2021-11-19 14:00:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2021-11-19 14:00:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:56,416 INFO L225 Difference]: With dead ends: 724 [2021-11-19 14:00:56,416 INFO L226 Difference]: Without dead ends: 386 [2021-11-19 14:00:56,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:56,418 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 596 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 14:00:56,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 596 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-19 14:00:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-19 14:00:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 367 states have (on average 1.1607629427792916) internal successors, (426), 379 states have internal predecessors, (426), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (16), 6 states have call predecessors, (16), 14 states have call successors, (16) [2021-11-19 14:00:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 456 transitions. [2021-11-19 14:00:56,440 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 456 transitions. Word has length 111 [2021-11-19 14:00:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:56,440 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 456 transitions. [2021-11-19 14:00:56,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:00:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 456 transitions. [2021-11-19 14:00:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 14:00:56,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:56,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:56,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:56,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:56,660 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1408576837, now seen corresponding path program 1 times [2021-11-19 14:00:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:56,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506129307] [2021-11-19 14:00:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:56,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:56,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:56,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:00:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:56,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:00:56,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:00:57,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:00:57,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:57,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506129307] [2021-11-19 14:00:57,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506129307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:00:57,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1257518488] [2021-11-19 14:00:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:57,521 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:57,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:00:57,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:00:57,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:00:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:57,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:00:58,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 14:00:58,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1257518488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:58,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:00:58,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-19 14:00:58,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58006883] [2021-11-19 14:00:58,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:58,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:58,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:00:58,481 INFO L87 Difference]: Start difference. First operand 386 states and 456 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:01,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:03,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:03,472 INFO L93 Difference]: Finished difference Result 676 states and 801 transitions. [2021-11-19 14:01:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:01:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-11-19 14:01:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:03,476 INFO L225 Difference]: With dead ends: 676 [2021-11-19 14:01:03,476 INFO L226 Difference]: Without dead ends: 335 [2021-11-19 14:01:03,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:01:03,478 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 250 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:03,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 279 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:01:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-19 14:01:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 219. [2021-11-19 14:01:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 206 states have (on average 1.1699029126213591) internal successors, (241), 213 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 14:01:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 258 transitions. [2021-11-19 14:01:03,493 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 258 transitions. Word has length 113 [2021-11-19 14:01:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:03,494 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 258 transitions. [2021-11-19 14:01:03,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:01:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 258 transitions. [2021-11-19 14:01:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 14:01:03,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:03,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:03,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:03,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 14:01:03,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:03,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1827414795, now seen corresponding path program 1 times [2021-11-19 14:01:03,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:03,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185233351] [2021-11-19 14:01:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:03,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:03,902 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:03,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:01:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:04,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:04,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:01:04,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:01:04,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:04,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185233351] [2021-11-19 14:01:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185233351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:04,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911075438] [2021-11-19 14:01:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:04,724 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:04,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:04,725 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:04,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:01:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:05,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:05,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:01:05,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:01:05,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911075438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:05,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768936973] [2021-11-19 14:01:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:05,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:05,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:01:05,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 14:01:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:05,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:01:06,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:01:06,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768936973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:06,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:01:06,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-19 14:01:06,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163173733] [2021-11-19 14:01:06,348 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:01:06,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:01:06,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:01:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:01:06,350 INFO L87 Difference]: Start difference. First operand 219 states and 258 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:01:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:06,814 INFO L93 Difference]: Finished difference Result 405 states and 489 transitions. [2021-11-19 14:01:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:01:06,816 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2021-11-19 14:01:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:06,820 INFO L225 Difference]: With dead ends: 405 [2021-11-19 14:01:06,820 INFO L226 Difference]: Without dead ends: 234 [2021-11-19 14:01:06,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:01:06,825 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 42 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:06,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1365 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:01:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-19 14:01:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2021-11-19 14:01:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 216 states have (on average 1.1990740740740742) internal successors, (259), 223 states have internal predecessors, (259), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 14:01:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2021-11-19 14:01:06,842 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 120 [2021-11-19 14:01:06,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:06,844 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2021-11-19 14:01:06,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:01:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2021-11-19 14:01:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 14:01:06,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:06,846 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:06,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:07,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:07,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:07,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:07,451 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 852458707, now seen corresponding path program 2 times [2021-11-19 14:01:07,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:07,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694075071] [2021-11-19 14:01:07,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:01:07,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:07,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:07,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:01:07,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:01:07,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:07,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:07,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:01:08,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:01:08,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:08,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694075071] [2021-11-19 14:01:08,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694075071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:08,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [752361899] [2021-11-19 14:01:08,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:01:08,516 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:08,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:08,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:01:09,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:01:09,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:09,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:09,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:01:09,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:01:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [752361899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:09,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135584490] [2021-11-19 14:01:09,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:01:09,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:09,674 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:01:09,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 14:01:09,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:01:09,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:09,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:10,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 14:01:10,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:01:10,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135584490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:10,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:01:10,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-19 14:01:10,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138047592] [2021-11-19 14:01:10,807 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:01:10,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:01:10,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:01:10,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:01:10,810 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:01:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:11,753 INFO L93 Difference]: Finished difference Result 423 states and 514 transitions. [2021-11-19 14:01:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 14:01:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2021-11-19 14:01:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:11,756 INFO L225 Difference]: With dead ends: 423 [2021-11-19 14:01:11,756 INFO L226 Difference]: Without dead ends: 243 [2021-11-19 14:01:11,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 14:01:11,758 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 60 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:11,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1590 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:01:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-19 14:01:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2021-11-19 14:01:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 223 states have (on average 1.1928251121076232) internal successors, (266), 230 states have internal predecessors, (266), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 14:01:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 283 transitions. [2021-11-19 14:01:11,772 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 283 transitions. Word has length 126 [2021-11-19 14:01:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:11,772 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 283 transitions. [2021-11-19 14:01:11,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:01:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 283 transitions. [2021-11-19 14:01:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 14:01:11,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:11,775 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:11,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:12,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:12,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-19 14:01:12,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:12,400 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 453394239, now seen corresponding path program 3 times [2021-11-19 14:01:12,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:12,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623941344] [2021-11-19 14:01:12,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:01:12,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:12,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:12,402 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:12,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:01:14,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:01:14,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:14,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:01:14,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 14:01:15,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 14:01:15,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623941344] [2021-11-19 14:01:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623941344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058266568] [2021-11-19 14:01:15,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:01:15,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:15,946 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:15,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 14:01:33,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:01:33,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:33,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:01:33,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 14:01:33,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 14:01:34,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058266568] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:34,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940212104] [2021-11-19 14:01:34,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:01:34,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:01:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:34,233 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:01:34,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00abcbce-0539-4e6b-b3d5-769ed3303cad/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process