./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8 --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:02,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:02,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:02,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:02,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:02,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:02,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:02,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:02,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:02,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:02,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:02,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:02,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:02,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:02,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:02,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:02,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:02,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:02,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:02,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:02,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:02,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:02,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:02,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:02,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:02,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:02,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:03,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:03,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:03,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:03,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:03,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:03,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:03,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:03,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:03,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:03,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:03,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:03,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:03,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:03,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:03,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:41:03,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:03,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:03,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:03,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:03,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:03,065 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:03,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:41:03,066 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:03,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:03,066 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:41:03,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:41:03,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:03,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:41:03,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:41:03,074 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:41:03,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:03,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:41:03,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:41:03,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:41:03,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:03,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:03,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:03,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:03,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:03,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:41:03,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:03,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:03,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:03,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:03,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:03,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:03,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:03,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:03,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:03,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:41:03,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:41:03,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:03,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:03,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:03,083 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2021-11-07 01:41:03,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:03,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:03,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:03,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:03,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:03,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-11-07 01:41:03,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/a5bfa7ae0/3ae5b056f86045f6bced4130d0b0234f/FLAG5ddb59d73 [2021-11-07 01:41:04,182 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:04,182 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-11-07 01:41:04,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/a5bfa7ae0/3ae5b056f86045f6bced4130d0b0234f/FLAG5ddb59d73 [2021-11-07 01:41:04,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/a5bfa7ae0/3ae5b056f86045f6bced4130d0b0234f [2021-11-07 01:41:04,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:04,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:04,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:04,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:04,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:04,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:04" (1/1) ... [2021-11-07 01:41:04,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb32f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:04, skipping insertion in model container [2021-11-07 01:41:04,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:04" (1/1) ... [2021-11-07 01:41:04,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:04,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:05,060 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[33021,33034] [2021-11-07 01:41:05,226 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44124,44137] [2021-11-07 01:41:05,229 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44245,44258] [2021-11-07 01:41:05,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:05,279 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) [2021-11-07 01:41:05,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@145566b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:05, skipping insertion in model container [2021-11-07 01:41:05,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:05,282 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:41:05,285 INFO L168 Benchmark]: Toolchain (without parser) took 863.38 ms. Allocated memory is still 115.3 MB. Free memory was 83.8 MB in the beginning and 81.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:05,287 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:05,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 857.80 ms. Allocated memory is still 115.3 MB. Free memory was 83.5 MB in the beginning and 81.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:05,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 857.80 ms. Allocated memory is still 115.3 MB. Free memory was 83.5 MB in the beginning and 81.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8 --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:07,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:07,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:07,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:07,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:07,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:07,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:07,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:07,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:07,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:07,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:07,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:07,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:07,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:07,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:07,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:07,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:07,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:07,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:07,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:07,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:07,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:07,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:07,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:07,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:07,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:07,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:07,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:07,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:07,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:07,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:07,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:07,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:07,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:07,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:07,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:07,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:07,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:07,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:07,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:07,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:07,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:41:07,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:07,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:07,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:07,940 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:07,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:07,940 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:07,941 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:07,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:07,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:07,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:07,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:41:07,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:41:07,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:07,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:07,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:07,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:07,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:07,946 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:41:07,947 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:41:07,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:41:07,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:07,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:07,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:07,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:07,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:41:07,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:07,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:07,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:07,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:07,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:07,950 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:41:07,950 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:07,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:07,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:07,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:07,951 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2021-11-07 01:41:08,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:08,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:08,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:08,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:08,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:08,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-11-07 01:41:08,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/5fcd8a9d4/d091c3f30cc94034999fee4b612d6950/FLAGb9097f581 [2021-11-07 01:41:09,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:09,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2021-11-07 01:41:09,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/5fcd8a9d4/d091c3f30cc94034999fee4b612d6950/FLAGb9097f581 [2021-11-07 01:41:09,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/data/5fcd8a9d4/d091c3f30cc94034999fee4b612d6950 [2021-11-07 01:41:09,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:09,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:09,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:09,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:09,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:09,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:09" (1/1) ... [2021-11-07 01:41:09,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e8cf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:09, skipping insertion in model container [2021-11-07 01:41:09,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:09" (1/1) ... [2021-11-07 01:41:09,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:09,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:09,970 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[33021,33034] [2021-11-07 01:41:10,160 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44124,44137] [2021-11-07 01:41:10,161 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44245,44258] [2021-11-07 01:41:10,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:10,210 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:41:10,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:10,263 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[33021,33034] [2021-11-07 01:41:10,345 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44124,44137] [2021-11-07 01:41:10,346 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44245,44258] [2021-11-07 01:41:10,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:10,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:41:10,408 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[33021,33034] [2021-11-07 01:41:10,474 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44124,44137] [2021-11-07 01:41:10,475 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_84806b2a-6d42-41f9-aedb-bf25673b7f01/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i[44245,44258] [2021-11-07 01:41:10,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:10,547 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:41:10,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10 WrapperNode [2021-11-07 01:41:10,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:10,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:10,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:41:10,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:41:10,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:10,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:41:10,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:41:10,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:41:10,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:41:10,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:41:10,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:41:10,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:41:10,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (1/1) ... [2021-11-07 01:41:10,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:10,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:41:10,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:41:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:41:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:41:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:41:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:41:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:41:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:41:11,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:41:17,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:41:17,908 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-07 01:41:17,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:17 BoogieIcfgContainer [2021-11-07 01:41:17,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:41:17,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:41:17,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:41:17,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:41:17,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:09" (1/3) ... [2021-11-07 01:41:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d11d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:17, skipping insertion in model container [2021-11-07 01:41:17,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:10" (2/3) ... [2021-11-07 01:41:17,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d11d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:17, skipping insertion in model container [2021-11-07 01:41:17,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:17" (3/3) ... [2021-11-07 01:41:17,921 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2021-11-07 01:41:17,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:41:17,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:41:17,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:41:17,995 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 [2021-11-07 01:41:17,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:41:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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) [2021-11-07 01:41:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:41:18,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:18,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:18,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-07 01:41:18,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:18,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130588629] [2021-11-07 01:41:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:18,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:18,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:18,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:41:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:18,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:41:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:18,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:18,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:18,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130588629] [2021-11-07 01:41:18,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130588629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:18,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:41:18,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203107985] [2021-11-07 01:41:18,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:41:18,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:41:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:41:18,386 INFO L87 Difference]: Start difference. First operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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) [2021-11-07 01:41:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:18,423 INFO L93 Difference]: Finished difference Result 419 states and 707 transitions. [2021-11-07 01:41:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:41:18,425 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 [2021-11-07 01:41:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:18,435 INFO L225 Difference]: With dead ends: 419 [2021-11-07 01:41:18,435 INFO L226 Difference]: Without dead ends: 177 [2021-11-07 01:41:18,439 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 [2021-11-07 01:41:18,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-07 01:41:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-07 01:41:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 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) [2021-11-07 01:41:18,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-07 01:41:18,483 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-07 01:41:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:18,484 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-07 01:41:18,484 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) [2021-11-07 01:41:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-07 01:41:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:41:18,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:18,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:18,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:18,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:18,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-07 01:41:18,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:18,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480549207] [2021-11-07 01:41:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:18,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:18,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:18,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:41:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:18,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:18,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:19,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:19,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:19,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480549207] [2021-11-07 01:41:19,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480549207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:19,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:19,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:41:19,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226140830] [2021-11-07 01:41:19,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:19,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:19,200 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:23,590 INFO L93 Difference]: Finished difference Result 460 states and 606 transitions. [2021-11-07 01:41:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 01:41:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:23,595 INFO L225 Difference]: With dead ends: 460 [2021-11-07 01:41:23,596 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 01:41:23,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 01:41:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2021-11-07 01:41:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 1.3273381294964028) internal successors, (369), 279 states have internal predecessors, (369), 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) [2021-11-07 01:41:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 369 transitions. [2021-11-07 01:41:23,623 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 369 transitions. Word has length 10 [2021-11-07 01:41:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:23,623 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 369 transitions. [2021-11-07 01:41:23,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 369 transitions. [2021-11-07 01:41:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:41:23,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:23,626 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, 1, 1] [2021-11-07 01:41:23,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:23,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:23,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash 627335073, now seen corresponding path program 1 times [2021-11-07 01:41:23,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:23,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071605042] [2021-11-07 01:41:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:23,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:23,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:23,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:41:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:24,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:24,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:24,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:24,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:24,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071605042] [2021-11-07 01:41:24,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071605042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:24,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:24,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:41:24,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067609822] [2021-11-07 01:41:24,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:24,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:24,405 INFO L87 Difference]: Start difference. First operand 280 states and 369 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:24,570 INFO L93 Difference]: Finished difference Result 450 states and 593 transitions. [2021-11-07 01:41:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:41:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:24,576 INFO L225 Difference]: With dead ends: 450 [2021-11-07 01:41:24,576 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 01:41:24,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 01:41:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 286. [2021-11-07 01:41:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 1.2640845070422535) internal successors, (359), 285 states have internal predecessors, (359), 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) [2021-11-07 01:41:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2021-11-07 01:41:24,601 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 44 [2021-11-07 01:41:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:24,601 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2021-11-07 01:41:24,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2021-11-07 01:41:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:41:24,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:24,604 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, 1, 1] [2021-11-07 01:41:24,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:24,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:24,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -317553387, now seen corresponding path program 1 times [2021-11-07 01:41:24,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:24,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859749370] [2021-11-07 01:41:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:24,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:24,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:24,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:41:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:25,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:41:25,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:25,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:26,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:26,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859749370] [2021-11-07 01:41:26,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859749370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:26,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:26,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:41:26,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844994313] [2021-11-07 01:41:26,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:41:26,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:26,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:41:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:41:26,041 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2021-11-07 01:41:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:26,222 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2021-11-07 01:41:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:41:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:26,225 INFO L225 Difference]: With dead ends: 442 [2021-11-07 01:41:26,225 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 01:41:26,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:41:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 01:41:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 274. [2021-11-07 01:41:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 1.2463235294117647) internal successors, (339), 273 states have internal predecessors, (339), 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) [2021-11-07 01:41:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 339 transitions. [2021-11-07 01:41:26,240 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 339 transitions. Word has length 44 [2021-11-07 01:41:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:26,241 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 339 transitions. [2021-11-07 01:41:26,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2021-11-07 01:41:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 339 transitions. [2021-11-07 01:41:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:41:26,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:26,244 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, 1, 1] [2021-11-07 01:41:26,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:26,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:26,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash -575718825, now seen corresponding path program 1 times [2021-11-07 01:41:26,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:26,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175126523] [2021-11-07 01:41:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:26,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:26,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:26,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:41:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:26,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:26,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:26,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:26,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:26,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:26,929 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:41:26,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:41:27,006 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:41:27,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:41:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:27,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:27,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:27,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175126523] [2021-11-07 01:41:27,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175126523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:27,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:27,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:41:27,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89057933] [2021-11-07 01:41:27,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:41:27,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:27,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:41:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:27,332 INFO L87 Difference]: Start difference. First operand 274 states and 339 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:37,233 INFO L93 Difference]: Finished difference Result 557 states and 668 transitions. [2021-11-07 01:41:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:41:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:41:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:37,237 INFO L225 Difference]: With dead ends: 557 [2021-11-07 01:41:37,238 INFO L226 Difference]: Without dead ends: 414 [2021-11-07 01:41:37,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-07 01:41:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 273. [2021-11-07 01:41:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.2435424354243543) internal successors, (337), 272 states have internal predecessors, (337), 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) [2021-11-07 01:41:37,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 337 transitions. [2021-11-07 01:41:37,252 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 337 transitions. Word has length 44 [2021-11-07 01:41:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 337 transitions. [2021-11-07 01:41:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 337 transitions. [2021-11-07 01:41:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:41:37,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:37,255 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:37,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:37,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:37,470 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash 858593360, now seen corresponding path program 1 times [2021-11-07 01:41:37,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:37,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355124415] [2021-11-07 01:41:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:37,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:37,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:37,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:41:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:37,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:38,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:38,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:38,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355124415] [2021-11-07 01:41:38,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355124415] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:38,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:38,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:41:38,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650420628] [2021-11-07 01:41:38,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:38,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:38,341 INFO L87 Difference]: Start difference. First operand 273 states and 337 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-07 01:41:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:38,484 INFO L93 Difference]: Finished difference Result 545 states and 679 transitions. [2021-11-07 01:41:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 69 [2021-11-07 01:41:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:38,487 INFO L225 Difference]: With dead ends: 545 [2021-11-07 01:41:38,487 INFO L226 Difference]: Without dead ends: 281 [2021-11-07 01:41:38,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:41:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-07 01:41:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2021-11-07 01:41:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.1805054151624548) internal successors, (327), 278 states have internal predecessors, (327), 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) [2021-11-07 01:41:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 327 transitions. [2021-11-07 01:41:38,500 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 327 transitions. Word has length 69 [2021-11-07 01:41:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:38,500 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 327 transitions. [2021-11-07 01:41:38,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-07 01:41:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 327 transitions. [2021-11-07 01:41:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:41:38,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:38,502 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:38,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:38,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:38,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-07 01:41:38,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:38,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376106741] [2021-11-07 01:41:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:38,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:38,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:38,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:38,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:41:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:39,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:39,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:39,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:39,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376106741] [2021-11-07 01:41:39,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376106741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:39,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:39,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:39,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126162404] [2021-11-07 01:41:39,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:39,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:39,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:39,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:39,583 INFO L87 Difference]: Start difference. First operand 279 states and 327 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-07 01:41:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:39,657 INFO L93 Difference]: Finished difference Result 516 states and 611 transitions. [2021-11-07 01:41:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:41:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 69 [2021-11-07 01:41:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:39,661 INFO L225 Difference]: With dead ends: 516 [2021-11-07 01:41:39,661 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 01:41:39,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 01:41:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-07 01:41:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 1.1785714285714286) internal successors, (330), 281 states have internal predecessors, (330), 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) [2021-11-07 01:41:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 330 transitions. [2021-11-07 01:41:39,675 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 330 transitions. Word has length 69 [2021-11-07 01:41:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:39,675 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 330 transitions. [2021-11-07 01:41:39,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-07 01:41:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 330 transitions. [2021-11-07 01:41:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:41:39,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:39,677 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:41:39,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:39,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 982130832, now seen corresponding path program 1 times [2021-11-07 01:41:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:39,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512611797] [2021-11-07 01:41:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:39,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:39,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:39,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:41:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:40,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:40,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:40,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:40,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:40,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512611797] [2021-11-07 01:41:40,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512611797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:40,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1282140796] [2021-11-07 01:41:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:40,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:40,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:40,969 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:41,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:41:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:41,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:41,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:42,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1282140796] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:42,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257283855] [2021-11-07 01:41:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:42,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:41:42,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:42,130 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:41:42,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:41:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:42,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:42,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:42,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:42,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:42,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:41:42,912 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:41:42,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:41:43,018 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:41:43,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:41:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:41:43,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:41:43,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257283855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:43,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:41:43,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:41:43,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839759743] [2021-11-07 01:41:43,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:41:43,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:41:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:41:43,290 INFO L87 Difference]: Start difference. First operand 282 states and 330 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2021-11-07 01:41:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:54,107 INFO L93 Difference]: Finished difference Result 423 states and 493 transitions. [2021-11-07 01:41:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:41:54,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 72 [2021-11-07 01:41:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:54,111 INFO L225 Difference]: With dead ends: 423 [2021-11-07 01:41:54,111 INFO L226 Difference]: Without dead ends: 419 [2021-11-07 01:41:54,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:41:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-07 01:41:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 284. [2021-11-07 01:41:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 1.177304964539007) internal successors, (332), 283 states have internal predecessors, (332), 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) [2021-11-07 01:41:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 332 transitions. [2021-11-07 01:41:54,127 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 332 transitions. Word has length 72 [2021-11-07 01:41:54,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:54,127 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 332 transitions. [2021-11-07 01:41:54,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2021-11-07 01:41:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 332 transitions. [2021-11-07 01:41:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:41:54,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:54,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:54,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:54,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:54,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:41:54,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:54,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -786181332, now seen corresponding path program 1 times [2021-11-07 01:41:54,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:54,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419542431] [2021-11-07 01:41:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:54,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:54,769 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:41:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:55,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:55,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:41:55,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:55,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419542431] [2021-11-07 01:41:55,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419542431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:41:55,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1896663514] [2021-11-07 01:41:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:55,991 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:55,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:41:55,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:41:56,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:41:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:56,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:41:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:41:57,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:41:57,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1896663514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:57,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:41:57,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:41:57,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949616836] [2021-11-07 01:41:57,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:57,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:41:57,665 INFO L87 Difference]: Start difference. First operand 284 states and 332 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 01:42:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:02,751 INFO L93 Difference]: Finished difference Result 605 states and 712 transitions. [2021-11-07 01:42:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:42:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 106 [2021-11-07 01:42:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:02,755 INFO L225 Difference]: With dead ends: 605 [2021-11-07 01:42:02,755 INFO L226 Difference]: Without dead ends: 366 [2021-11-07 01:42:02,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:42:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-07 01:42:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 359. [2021-11-07 01:42:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 357 states have (on average 1.1820728291316527) internal successors, (422), 358 states have internal predecessors, (422), 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) [2021-11-07 01:42:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 422 transitions. [2021-11-07 01:42:02,774 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 422 transitions. Word has length 106 [2021-11-07 01:42:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:02,775 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 422 transitions. [2021-11-07 01:42:02,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-07 01:42:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 422 transitions. [2021-11-07 01:42:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:42:02,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:02,777 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:02,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:02,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:03,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 530496366, now seen corresponding path program 1 times [2021-11-07 01:42:03,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:03,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63906068] [2021-11-07 01:42:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:03,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:03,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:03,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:42:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:03,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:42:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:42:04,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:42:04,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:04,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63906068] [2021-11-07 01:42:04,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63906068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:04,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1215011080] [2021-11-07 01:42:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:04,434 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:04,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:42:04,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:42:04,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:42:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:42:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:42:05,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:42:05,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1215011080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:05,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104033806] [2021-11-07 01:42:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:05,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:42:05,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:42:05,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:42:05,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:42:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:42:06,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:42:07,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:42:07,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104033806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:07,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:42:07,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:42:07,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338241307] [2021-11-07 01:42:07,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:42:07,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:42:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:42:07,269 INFO L87 Difference]: Start difference. First operand 359 states and 422 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2021-11-07 01:42:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:07,632 INFO L93 Difference]: Finished difference Result 676 states and 805 transitions. [2021-11-07 01:42:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:42:07,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 113 [2021-11-07 01:42:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:07,636 INFO L225 Difference]: With dead ends: 676 [2021-11-07 01:42:07,636 INFO L226 Difference]: Without dead ends: 367 [2021-11-07 01:42:07,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:42:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-07 01:42:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2021-11-07 01:42:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 365 states have (on average 1.178082191780822) internal successors, (430), 366 states have internal predecessors, (430), 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) [2021-11-07 01:42:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 430 transitions. [2021-11-07 01:42:07,657 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 430 transitions. Word has length 113 [2021-11-07 01:42:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:07,658 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 430 transitions. [2021-11-07 01:42:07,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2021-11-07 01:42:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 430 transitions. [2021-11-07 01:42:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:42:07,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:07,660 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:07,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:08,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:08,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:08,289 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:08,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1097324242, now seen corresponding path program 2 times [2021-11-07 01:42:08,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:08,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305551170] [2021-11-07 01:42:08,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:42:08,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:08,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:42:09,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:42:09,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:42:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:42:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:09,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:10,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:10,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305551170] [2021-11-07 01:42:10,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305551170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:10,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108805590] [2021-11-07 01:42:10,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:42:10,551 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:42:10,552 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:42:10,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:42:11,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:42:11,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:42:11,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:42:11,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:12,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:42:12,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [108805590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:12,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452863924] [2021-11-07 01:42:12,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:42:12,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:42:12,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:42:12,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:42:12,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:42:13,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:42:13,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:42:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:42:13,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:42:14,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:42:15,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452863924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:15,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:42:15,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:42:15,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677042125] [2021-11-07 01:42:15,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:42:15,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:42:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:42:15,082 INFO L87 Difference]: Start difference. First operand 367 states and 430 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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) [2021-11-07 01:42:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:19,326 INFO L93 Difference]: Finished difference Result 1003 states and 1202 transitions. [2021-11-07 01:42:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:42:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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 121 [2021-11-07 01:42:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:19,334 INFO L225 Difference]: With dead ends: 1003 [2021-11-07 01:42:19,334 INFO L226 Difference]: Without dead ends: 690 [2021-11-07 01:42:19,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:42:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-07 01:42:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 389. [2021-11-07 01:42:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.1705426356589148) internal successors, (453), 388 states have internal predecessors, (453), 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) [2021-11-07 01:42:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 453 transitions. [2021-11-07 01:42:19,371 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 453 transitions. Word has length 121 [2021-11-07 01:42:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:19,372 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 453 transitions. [2021-11-07 01:42:19,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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) [2021-11-07 01:42:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 453 transitions. [2021-11-07 01:42:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:42:19,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:19,379 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:19,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:19,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:19,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:42:19,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:19,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:19,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:19,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1558698834, now seen corresponding path program 3 times [2021-11-07 01:42:19,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:19,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95127648] [2021-11-07 01:42:19,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:42:19,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:19,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:19,995 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:42:27,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:42:27,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:42:28,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:42:28,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:42:28,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:42:30,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:30,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95127648] [2021-11-07 01:42:30,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95127648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:42:30,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753782438] [2021-11-07 01:42:30,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:42:30,699 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:42:30,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:42:30,700 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:42:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:43:19,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:43:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:43:19,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:43:19,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:43:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:43:19,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:43:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:43:20,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1753782438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:43:20,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076407906] [2021-11-07 01:43:20,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:43:20,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:43:20,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:43:20,052 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:43:20,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84806b2a-6d42-41f9-aedb-bf25673b7f01/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process