./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:56:27,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:56:27,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:56:27,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:56:27,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:56:27,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:56:27,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:56:27,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:56:27,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:56:27,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:56:27,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:56:27,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:56:27,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:56:27,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:56:27,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:56:27,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:56:27,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:56:27,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:56:27,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:56:27,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:56:27,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:56:27,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:56:27,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:56:27,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:56:27,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:56:27,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:56:27,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:56:27,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:56:27,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:56:27,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:56:27,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:56:27,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:56:27,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:56:27,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:56:27,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:56:27,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:56:27,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:56:27,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:56:27,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:56:27,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:56:27,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:56:27,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:56:27,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:56:27,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:56:27,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:56:27,824 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:56:27,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:56:27,825 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:56:27,825 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:56:27,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:56:27,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:56:27,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:56:27,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:56:27,828 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:56:27,828 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:56:27,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:56:27,828 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:56:27,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:56:27,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:56:27,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:56:27,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:56:27,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:56:27,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:56:27,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:56:27,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:56:27,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:56:27,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:56:27,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:56:27,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:56:27,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:56:27,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:56:27,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:56:27,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:56:27,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:56:27,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:56:27,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:56:27,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:56:27,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:56:27,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:56:27,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:56:27,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:56:27,840 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_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 [2021-11-03 04:56:28,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:56:28,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:56:28,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:56:28,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:56:28,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:56:28,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2021-11-03 04:56:28,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/6a6f46e55/c3ae9cdaf098459f9a933f0e2a624ec0/FLAGff89e786f [2021-11-03 04:56:29,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:56:29,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2021-11-03 04:56:29,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/6a6f46e55/c3ae9cdaf098459f9a933f0e2a624ec0/FLAGff89e786f [2021-11-03 04:56:29,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/6a6f46e55/c3ae9cdaf098459f9a933f0e2a624ec0 [2021-11-03 04:56:29,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:56:29,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:56:29,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:56:29,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:56:29,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:56:29,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:56:29" (1/1) ... [2021-11-03 04:56:29,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd6c34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:29, skipping insertion in model container [2021-11-03 04:56:29,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:56:29" (1/1) ... [2021-11-03 04:56:29,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:56:29,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:56:29,679 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2021-11-03 04:56:29,859 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2021-11-03 04:56:29,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:56:29,912 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:56:29,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c3ffa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:29, skipping insertion in model container [2021-11-03 04:56:29,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:56:29,913 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:56:29,915 INFO L168 Benchmark]: Toolchain (without parser) took 769.27 ms. Allocated memory is still 125.8 MB. Free memory was 84.1 MB in the beginning and 85.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:56:29,916 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:56:29,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.37 ms. Allocated memory is still 125.8 MB. Free memory was 83.9 MB in the beginning and 85.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:56:29,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.37 ms. Allocated memory is still 125.8 MB. Free memory was 83.9 MB in the beginning and 85.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:56:32,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:56:32,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:56:32,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:56:32,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:56:32,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:56:32,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:56:32,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:56:32,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:56:32,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:56:32,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:56:32,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:56:32,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:56:32,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:56:32,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:56:32,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:56:32,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:56:32,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:56:32,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:56:32,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:56:32,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:56:32,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:56:32,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:56:32,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:56:32,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:56:32,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:56:32,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:56:32,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:56:32,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:56:32,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:56:32,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:56:32,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:56:32,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:56:32,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:56:32,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:56:32,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:56:32,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:56:32,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:56:32,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:56:32,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:56:32,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:56:32,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:56:32,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:56:32,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:56:32,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:56:32,677 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:56:32,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:56:32,678 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:56:32,678 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:56:32,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:56:32,679 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:56:32,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:56:32,681 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:56:32,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:56:32,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:56:32,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:56:32,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:56:32,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:56:32,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:56:32,683 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:56:32,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:56:32,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:56:32,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:56:32,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:56:32,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:56:32,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:56:32,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:56:32,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:56:32,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:56:32,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:56:32,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:56:32,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:56:32,687 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:56:32,687 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:56:32,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:56:32,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:56:32,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:56:32,689 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_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 [2021-11-03 04:56:33,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:56:33,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:56:33,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:56:33,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:56:33,183 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:56:33,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2021-11-03 04:56:33,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/c6a241114/1e193d29eb814609bca2715ebe0dbee1/FLAGa5d6fb596 [2021-11-03 04:56:34,087 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:56:34,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2021-11-03 04:56:34,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/c6a241114/1e193d29eb814609bca2715ebe0dbee1/FLAGa5d6fb596 [2021-11-03 04:56:34,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/data/c6a241114/1e193d29eb814609bca2715ebe0dbee1 [2021-11-03 04:56:34,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:56:34,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:56:34,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:56:34,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:56:34,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:56:34,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:56:34" (1/1) ... [2021-11-03 04:56:34,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4129f754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:34, skipping insertion in model container [2021-11-03 04:56:34,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:56:34" (1/1) ... [2021-11-03 04:56:34,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:56:34,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:56:34,951 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2021-11-03 04:56:35,210 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2021-11-03 04:56:35,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:56:35,278 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:56:35,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:56:35,336 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2021-11-03 04:56:35,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2021-11-03 04:56:35,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:56:35,522 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:56:35,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2021-11-03 04:56:35,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2021-11-03 04:56:35,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:56:35,744 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:56:35,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35 WrapperNode [2021-11-03 04:56:35,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:56:35,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:56:35,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:56:35,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:56:35,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:35,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:35,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:56:35,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:56:35,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:56:35,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:56:35,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:35,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:35,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:35,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:36,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:36,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:36,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:36,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:56:36,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:56:36,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:56:36,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:56:36,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (1/1) ... [2021-11-03 04:56:36,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:56:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:56:36,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:56:36,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:56:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:56:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:56:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:56:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:56:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:56:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:56:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:56:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:56:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:56:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:56:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:56:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:56:48,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:56:48,807 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-03 04:56:48,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:56:48 BoogieIcfgContainer [2021-11-03 04:56:48,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:56:48,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:56:48,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:56:48,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:56:48,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:56:34" (1/3) ... [2021-11-03 04:56:48,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c62534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:56:48, skipping insertion in model container [2021-11-03 04:56:48,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:56:35" (2/3) ... [2021-11-03 04:56:48,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c62534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:56:48, skipping insertion in model container [2021-11-03 04:56:48,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:56:48" (3/3) ... [2021-11-03 04:56:48,821 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-2.i [2021-11-03 04:56:48,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:56:48,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:56:48,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:56:48,920 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:56:48,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:56:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:56:48,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:48,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:48,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:56:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-03 04:56:48,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:48,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086372163] [2021-11-03 04:56:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:48,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:49,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:49,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:56:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:49,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:56:49,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:49,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:49,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:49,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086372163] [2021-11-03 04:56:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086372163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:49,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:49,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:56:49,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874402755] [2021-11-03 04:56:49,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:56:49,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:49,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:56:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:56:49,376 INFO L87 Difference]: Start difference. First operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:49,439 INFO L93 Difference]: Finished difference Result 572 states and 962 transitions. [2021-11-03 04:56:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:56:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:56:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:49,456 INFO L225 Difference]: With dead ends: 572 [2021-11-03 04:56:49,456 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 04:56:49,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:56:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 04:56:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-03 04:56:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-03 04:56:49,555 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-03 04:56:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:49,556 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-03 04:56:49,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-03 04:56:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:56:49,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:49,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:49,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:49,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:49,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:56:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-03 04:56:49,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:49,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729317911] [2021-11-03 04:56:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:49,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:49,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:56:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:50,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:56:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:50,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:50,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:50,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729317911] [2021-11-03 04:56:50,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729317911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:50,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:50,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:56:50,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709580698] [2021-11-03 04:56:50,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:50,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:50,409 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:50,798 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-03 04:56:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 42 [2021-11-03 04:56:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:50,809 INFO L225 Difference]: With dead ends: 589 [2021-11-03 04:56:50,810 INFO L226 Difference]: Without dead ends: 507 [2021-11-03 04:56:50,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-03 04:56:50,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-03 04:56:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-03 04:56:50,937 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-03 04:56:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:50,938 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-03 04:56:50,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-03 04:56:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 04:56:50,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:50,961 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:50,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:51,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:51,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:56:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-03 04:56:51,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:51,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896141389] [2021-11-03 04:56:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:51,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:51,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:51,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:56:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:52,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:52,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 04:56:52,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 04:56:53,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:53,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896141389] [2021-11-03 04:56:53,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896141389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:53,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:53,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:56:53,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867064177] [2021-11-03 04:56:53,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:56:53,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:56:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:53,791 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:53,949 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-03 04:56:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 238 [2021-11-03 04:56:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:53,956 INFO L225 Difference]: With dead ends: 850 [2021-11-03 04:56:53,956 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 04:56:53,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:56:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 04:56:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-03 04:56:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-03 04:56:54,008 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-03 04:56:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:54,011 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-03 04:56:54,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-03 04:56:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 04:56:54,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:54,024 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:54,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:54,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:54,243 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:56:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-03 04:56:54,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:54,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094815436] [2021-11-03 04:56:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:54,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:54,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:54,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:54,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:56:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:55,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:56:55,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 04:56:56,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 04:56:57,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094815436] [2021-11-03 04:56:57,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094815436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:57,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:57,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 04:56:57,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069941309] [2021-11-03 04:56:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:56:57,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:56:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:56:57,432 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:57,548 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-03 04:56:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:57,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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 238 [2021-11-03 04:56:57,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:57,553 INFO L225 Difference]: With dead ends: 819 [2021-11-03 04:56:57,553 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 04:56:57,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:56:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 04:56:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 04:56:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-03 04:56:57,578 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-03 04:56:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:57,578 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-03 04:56:57,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-03 04:56:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 04:56:57,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:57,584 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:57,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:57,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:57,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:56:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-03 04:56:57,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:57,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942912536] [2021-11-03 04:56:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:57,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:57,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:57,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:56:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:58,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:58,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 04:56:59,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 04:57:00,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:00,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942912536] [2021-11-03 04:57:00,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942912536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:00,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:57:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640110261] [2021-11-03 04:57:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:57:00,828 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:01,320 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-03 04:57:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 238 [2021-11-03 04:57:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:01,334 INFO L225 Difference]: With dead ends: 789 [2021-11-03 04:57:01,334 INFO L226 Difference]: Without dead ends: 417 [2021-11-03 04:57:01,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:57:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-03 04:57:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-03 04:57:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-03 04:57:01,355 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-03 04:57:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:01,355 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-03 04:57:01,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-03 04:57:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-03 04:57:01,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:01,360 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:01,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:01,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:01,575 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-03 04:57:01,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:01,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372414675] [2021-11-03 04:57:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:01,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:01,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:01,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:57:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:02,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:02,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 04:57:03,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 04:57:04,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:04,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372414675] [2021-11-03 04:57:04,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372414675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:04,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:04,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:57:04,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82083432] [2021-11-03 04:57:04,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:57:04,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:57:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:04,196 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:04,332 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-03 04:57:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:04,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 245 [2021-11-03 04:57:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:04,337 INFO L225 Difference]: With dead ends: 805 [2021-11-03 04:57:04,338 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 04:57:04,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:57:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 04:57:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-03 04:57:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-03 04:57:04,367 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-03 04:57:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:04,367 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-03 04:57:04,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-03 04:57:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 04:57:04,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:04,373 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:04,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:57:04,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:04,587 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-03 04:57:04,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:04,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638352237] [2021-11-03 04:57:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:04,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:04,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:04,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:57:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:05,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:05,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:06,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:07,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:07,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638352237] [2021-11-03 04:57:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638352237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:07,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1856128759] [2021-11-03 04:57:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:07,615 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:07,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:07,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 04:57:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:09,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 04:57:09,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 04:57:10,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1856128759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:10,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:10,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-03 04:57:10,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986729700] [2021-11-03 04:57:10,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:57:10,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:57:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:57:10,624 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:10,853 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-03 04:57:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 248 [2021-11-03 04:57:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:10,862 INFO L225 Difference]: With dead ends: 803 [2021-11-03 04:57:10,865 INFO L226 Difference]: Without dead ends: 471 [2021-11-03 04:57:10,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:57:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-03 04:57:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-03 04:57:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-03 04:57:10,890 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-03 04:57:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:10,893 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-03 04:57:10,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-03 04:57:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 04:57:10,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:10,898 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:10,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:11,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:11,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:11,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-03 04:57:11,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:11,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949680172] [2021-11-03 04:57:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:11,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:11,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:11,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:57:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:12,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:12,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:13,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:14,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:14,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949680172] [2021-11-03 04:57:14,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949680172] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:14,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [54663367] [2021-11-03 04:57:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:14,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:14,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:14,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:14,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:57:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:16,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:16,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 04:57:17,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 04:57:18,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [54663367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:18,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:18,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:57:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858338106] [2021-11-03 04:57:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:18,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:18,188 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:18,833 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-03 04:57:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 248 [2021-11-03 04:57:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:18,840 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 04:57:18,841 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 04:57:18,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 04:57:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-03 04:57:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-03 04:57:18,875 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-03 04:57:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:18,876 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-03 04:57:18,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-03 04:57:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 04:57:18,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:18,880 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:18,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:19,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:19,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:19,295 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-03 04:57:19,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:19,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471418784] [2021-11-03 04:57:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:19,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:19,299 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:57:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:21,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:57:22,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:22,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471418784] [2021-11-03 04:57:22,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471418784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:22,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728163247] [2021-11-03 04:57:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:22,617 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:22,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:22,618 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:22,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:57:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:24,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:24,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 04:57:26,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 04:57:29,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1728163247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:29,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:29,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:57:29,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619497609] [2021-11-03 04:57:29,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:29,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:29,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:29,095 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:29,636 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-03 04:57:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 255 [2021-11-03 04:57:29,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:29,642 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 04:57:29,643 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 04:57:29,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 04:57:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-03 04:57:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-03 04:57:29,676 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-03 04:57:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:29,677 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-03 04:57:29,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-03 04:57:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 04:57:29,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:29,681 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:29,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:29,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:30,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:30,098 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-03 04:57:30,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:30,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578394781] [2021-11-03 04:57:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:30,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:30,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:30,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:57:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:32,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:32,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:33,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:33,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578394781] [2021-11-03 04:57:33,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578394781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:33,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2010602238] [2021-11-03 04:57:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:33,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:33,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 04:57:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:36,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 04:57:36,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 04:57:37,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2010602238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:37,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:37,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:57:37,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5377359] [2021-11-03 04:57:37,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:57:37,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:57:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:37,294 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:37,435 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-03 04:57:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:57:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 265 [2021-11-03 04:57:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:37,443 INFO L225 Difference]: With dead ends: 959 [2021-11-03 04:57:37,444 INFO L226 Difference]: Without dead ends: 800 [2021-11-03 04:57:37,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:57:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-03 04:57:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-03 04:57:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-03 04:57:37,479 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-03 04:57:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:37,480 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-03 04:57:37,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-03 04:57:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 04:57:37,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:37,484 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:37,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:37,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:37,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:37,903 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-03 04:57:37,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:37,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985549858] [2021-11-03 04:57:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:37,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:37,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:37,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:57:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:40,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:40,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:40,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:41,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:41,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985549858] [2021-11-03 04:57:41,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985549858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:41,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [845984309] [2021-11-03 04:57:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:41,828 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:41,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:41,828 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:41,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:57:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:44,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:57:44,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:57:45,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:57:46,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [845984309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:46,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:46,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 04:57:46,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083227642] [2021-11-03 04:57:46,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:57:46,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:57:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:57:46,109 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:46,273 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-03 04:57:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:46,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 265 [2021-11-03 04:57:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:46,280 INFO L225 Difference]: With dead ends: 1457 [2021-11-03 04:57:46,280 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 04:57:46,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:57:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 04:57:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-03 04:57:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-03 04:57:46,314 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-03 04:57:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:46,314 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-03 04:57:46,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-03 04:57:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 04:57:46,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:46,318 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:46,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-03 04:57:46,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:46,767 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-03 04:57:46,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:46,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529317204] [2021-11-03 04:57:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:46,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:46,771 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:46,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:57:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:49,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:50,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:51,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:51,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529317204] [2021-11-03 04:57:51,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529317204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:51,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1111046495] [2021-11-03 04:57:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:51,069 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:51,071 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:51,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 04:57:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:54,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:57:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 04:57:54,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 04:57:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1111046495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:55,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:57:55,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 04:57:55,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405383304] [2021-11-03 04:57:55,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:57:55,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:57:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:57:55,412 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:55,546 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-03 04:57:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:57:55,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 265 [2021-11-03 04:57:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:55,552 INFO L225 Difference]: With dead ends: 929 [2021-11-03 04:57:55,552 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 04:57:55,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:57:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 04:57:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-03 04:57:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-03 04:57:55,585 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-03 04:57:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:55,585 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-03 04:57:55,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-03 04:57:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 04:57:55,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:55,589 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:55,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:55,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:56,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:56,003 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:57:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-03 04:57:56,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:56,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880476223] [2021-11-03 04:57:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:56,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:56,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:56,006 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:56,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:57:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:58,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:58,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:57:59,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:58:00,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:00,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880476223] [2021-11-03 04:58:00,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880476223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:00,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [945443861] [2021-11-03 04:58:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:00,188 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:58:00,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:58:00,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:58:00,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 04:58:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:04,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:58:04,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:58:04,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:58:05,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [945443861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:05,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595610736] [2021-11-03 04:58:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:05,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:58:05,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:58:05,439 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:58:05,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 04:58:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:58:08,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 04:58:09,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 04:58:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595610736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:10,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:58:10,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 04:58:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886249909] [2021-11-03 04:58:10,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:58:10,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:58:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:58:10,069 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:10,706 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-03 04:58:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:58:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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 265 [2021-11-03 04:58:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:10,713 INFO L225 Difference]: With dead ends: 1387 [2021-11-03 04:58:10,713 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 04:58:10,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:58:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 04:58:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-03 04:58:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-03 04:58:10,751 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-03 04:58:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:10,752 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-03 04:58:10,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-03 04:58:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 04:58:10,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:10,756 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:58:10,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:11,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:11,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:11,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:58:11,380 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:58:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-03 04:58:11,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:11,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496730131] [2021-11-03 04:58:11,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:58:11,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:11,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:11,383 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 04:58:14,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:58:14,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:58:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:58:14,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:58:15,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:58:16,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:16,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496730131] [2021-11-03 04:58:16,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496730131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:16,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800341044] [2021-11-03 04:58:16,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:58:16,766 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:58:16,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:58:16,766 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:58:16,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 04:58:22,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:58:22,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:58:22,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:58:22,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:58:23,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:58:23,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [800341044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:23,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550429946] [2021-11-03 04:58:23,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:58:23,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:58:23,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:58:23,907 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:58:23,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 04:58:27,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:58:27,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:58:27,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:58:27,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:58:28,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:58:30,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550429946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:58:30,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:58:30,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-03 04:58:30,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467190608] [2021-11-03 04:58:30,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 04:58:30,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 04:58:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:58:30,210 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:58,349 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-03 04:58:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 04:58:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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 281 [2021-11-03 04:58:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:58,367 INFO L225 Difference]: With dead ends: 3281 [2021-11-03 04:58:58,367 INFO L226 Difference]: Without dead ends: 2593 [2021-11-03 04:58:58,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 04:58:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-03 04:58:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-03 04:58:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-03 04:58:58,520 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-03 04:58:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:58,520 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-03 04:58:58,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:58:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-03 04:58:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-03 04:58:58,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:58,532 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:58:58,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:58,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-03 04:58:58,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-03 04:58:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:59,150 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:58:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-03 04:58:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:59,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025357173] [2021-11-03 04:58:59,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:58:59,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:59,155 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:59,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_288c12d3-fcbf-42d2-b9a5-afa1163f58d2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process