./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:05:08,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:05:08,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:05:08,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:05:08,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:05:08,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:05:08,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:05:08,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:05:08,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:05:08,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:05:08,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:05:08,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:05:08,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:05:08,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:05:08,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:05:08,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:05:08,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:05:08,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:05:08,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:05:08,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:05:08,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:05:08,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:05:08,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:05:08,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:05:08,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:05:08,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:05:08,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:05:08,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:05:08,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:05:08,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:05:08,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:05:08,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:05:08,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:05:08,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:05:08,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:05:08,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:05:08,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:05:08,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:05:08,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:05:08,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:05:08,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:05:08,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:05:09,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:05:09,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:05:09,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:05:09,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:05:09,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:05:09,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:05:09,020 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:05:09,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:05:09,021 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:05:09,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:05:09,022 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:05:09,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:05:09,022 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:05:09,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:05:09,023 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:05:09,023 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:05:09,023 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:05:09,024 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:05:09,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:05:09,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:05:09,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:05:09,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:05:09,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:05:09,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:05:09,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:05:09,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:05:09,028 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:05:09,028 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:05:09,028 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:05:09,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:05:09,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:05:09,029 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:05:09,030 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:05:09,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:05:09,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:05:09,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:05:09,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:05:09,031 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:05:09,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:05:09,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:05:09,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:05:09,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:05:09,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2022-11-23 14:05:09,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:05:09,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:05:09,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:05:09,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:05:09,362 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:05:09,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-23 14:05:12,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:05:12,933 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:05:12,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-23 14:05:12,959 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/964e1e17c/47d0a87461fa4187a4a5e12b463891bf/FLAGbde727632 [2022-11-23 14:05:12,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/964e1e17c/47d0a87461fa4187a4a5e12b463891bf [2022-11-23 14:05:12,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:05:12,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:05:12,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:12,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:05:12,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:05:12,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:12" (1/1) ... [2022-11-23 14:05:12,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b3f484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:12, skipping insertion in model container [2022-11-23 14:05:12,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:12" (1/1) ... [2022-11-23 14:05:13,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:05:13,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:05:13,539 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-23 14:05:13,677 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-23 14:05:13,679 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-23 14:05:13,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:13,703 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-23 14:05:13,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f638071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:13, skipping insertion in model container [2022-11-23 14:05:13,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:13,705 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 14:05:13,707 INFO L158 Benchmark]: Toolchain (without parser) took 723.50ms. Allocated memory is still 178.3MB. Free memory was 134.2MB in the beginning and 115.0MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 14:05:13,707 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:05:13,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.56ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 115.0MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 14:05:13,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.56ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 115.0MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:05:16,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:05:16,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:05:16,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:05:16,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:05:16,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:05:16,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:05:16,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:05:16,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:05:16,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:05:16,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:05:16,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:05:16,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:05:16,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:05:16,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:05:16,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:05:16,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:05:16,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:05:16,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:05:16,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:05:16,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:05:16,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:05:16,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:05:16,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:05:16,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:05:16,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:05:16,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:05:16,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:05:16,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:05:16,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:05:16,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:05:16,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:05:16,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:05:16,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:05:16,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:05:16,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:05:16,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:05:16,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:05:16,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:05:16,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:05:16,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:05:16,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 14:05:16,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:05:16,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:05:16,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:05:16,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:05:16,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:05:16,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:05:16,331 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:05:16,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:05:16,332 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:05:16,332 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:05:16,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:05:16,333 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:05:16,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:05:16,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:05:16,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:05:16,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:05:16,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:05:16,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:05:16,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:05:16,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:05:16,336 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:05:16,336 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:05:16,336 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:05:16,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:05:16,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:05:16,337 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:05:16,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:05:16,337 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:05:16,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:05:16,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:05:16,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:05:16,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:05:16,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:05:16,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:05:16,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:05:16,340 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:05:16,340 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:05:16,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:05:16,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:05:16,340 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2022-11-23 14:05:16,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:05:16,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:05:16,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:05:16,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:05:16,748 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:05:16,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-23 14:05:19,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:05:20,392 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:05:20,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2022-11-23 14:05:20,409 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/bbd9da358/a84d142dabca45e6b4ef371c6ffb9ab6/FLAGd811fdf6e [2022-11-23 14:05:20,449 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/data/bbd9da358/a84d142dabca45e6b4ef371c6ffb9ab6 [2022-11-23 14:05:20,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:05:20,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:05:20,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:20,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:05:20,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:05:20,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:20" (1/1) ... [2022-11-23 14:05:20,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601bf49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:20, skipping insertion in model container [2022-11-23 14:05:20,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:20" (1/1) ... [2022-11-23 14:05:20,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:05:20,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:05:20,955 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-23 14:05:21,133 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-23 14:05:21,157 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-23 14:05:21,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:21,204 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:05:21,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:05:21,246 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-23 14:05:21,295 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-23 14:05:21,296 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-23 14:05:21,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:21,303 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:05:21,329 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2022-11-23 14:05:21,397 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2022-11-23 14:05:21,399 WARN L237 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_0f6c7cde-cb2b-4735-a279-1517b04ed91d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2022-11-23 14:05:21,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:21,459 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:05:21,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21 WrapperNode [2022-11-23 14:05:21,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:21,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:05:21,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:05:21,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:05:21,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,601 INFO L138 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1007 [2022-11-23 14:05:21,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:05:21,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:05:21,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:05:21,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:05:21,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:05:21,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:05:21,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:05:21,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:05:21,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (1/1) ... [2022-11-23 14:05:21,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:05:21,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:05:21,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:05:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:05:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 14:05:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:05:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:05:21,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:05:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:05:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:05:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:05:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:05:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:05:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:05:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:05:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:05:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:05:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:05:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:05:22,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:05:22,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:05:22,157 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:05:27,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:05:27,590 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:05:27,590 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-23 14:05:27,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:27 BoogieIcfgContainer [2022-11-23 14:05:27,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:05:27,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:05:27,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:05:27,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:05:27,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:05:20" (1/3) ... [2022-11-23 14:05:27,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b093ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:05:27, skipping insertion in model container [2022-11-23 14:05:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:21" (2/3) ... [2022-11-23 14:05:27,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b093ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:05:27, skipping insertion in model container [2022-11-23 14:05:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:27" (3/3) ... [2022-11-23 14:05:27,605 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2022-11-23 14:05:27,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:05:27,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2022-11-23 14:05:27,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:05:27,738 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ddb2e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:05:27,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2022-11-23 14:05:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:05:27,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:27,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:05:27,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-23 14:05:27,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:27,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887228116] [2022-11-23 14:05:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:27,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:27,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:27,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:05:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:27,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:05:27,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:28,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:05:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:28,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:28,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:28,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887228116] [2022-11-23 14:05:28,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887228116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:28,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:28,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:05:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321776945] [2022-11-23 14:05:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:28,096 INFO L87 Difference]: Start difference. First operand has 1049 states, 517 states have (on average 2.25531914893617) internal successors, (1166), 1044 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:05:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:30,505 INFO L93 Difference]: Finished difference Result 1040 states and 1094 transitions. [2022-11-23 14:05:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:30,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-23 14:05:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:30,535 INFO L225 Difference]: With dead ends: 1040 [2022-11-23 14:05:30,536 INFO L226 Difference]: Without dead ends: 1038 [2022-11-23 14:05:30,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:30,541 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 967 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:30,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 668 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 14:05:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-23 14:05:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1030. [2022-11-23 14:05:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 515 states have (on average 2.095145631067961) internal successors, (1079), 1025 states have internal predecessors, (1079), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1085 transitions. [2022-11-23 14:05:30,652 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1085 transitions. Word has length 3 [2022-11-23 14:05:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:30,653 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1085 transitions. [2022-11-23 14:05:30,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:05:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1085 transitions. [2022-11-23 14:05:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:05:30,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:30,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:05:30,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 14:05:30,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:30,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-23 14:05:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:30,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619448744] [2022-11-23 14:05:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:30,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:30,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:05:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:05:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:31,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:05:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:31,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:31,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:31,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619448744] [2022-11-23 14:05:31,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619448744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:31,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:31,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:05:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22631862] [2022-11-23 14:05:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:31,070 INFO L87 Difference]: Start difference. First operand 1030 states and 1085 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:05:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:35,081 INFO L93 Difference]: Finished difference Result 1420 states and 1504 transitions. [2022-11-23 14:05:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-23 14:05:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:35,087 INFO L225 Difference]: With dead ends: 1420 [2022-11-23 14:05:35,088 INFO L226 Difference]: Without dead ends: 1420 [2022-11-23 14:05:35,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:35,089 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 419 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:35,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1458 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 14:05:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-11-23 14:05:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1231. [2022-11-23 14:05:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 717 states have (on average 2.0808926080892607) internal successors, (1492), 1226 states have internal predecessors, (1492), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1498 transitions. [2022-11-23 14:05:35,132 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1498 transitions. Word has length 3 [2022-11-23 14:05:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:35,133 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1498 transitions. [2022-11-23 14:05:35,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-23 14:05:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1498 transitions. [2022-11-23 14:05:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:05:35,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:35,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:35,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-23 14:05:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:35,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-23 14:05:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:35,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913995148] [2022-11-23 14:05:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:35,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:35,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 14:05:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:35,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:05:35,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:35,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:05:35,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:05:35,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:35,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:05:35,664 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:05:35,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-23 14:05:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:35,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:35,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:35,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913995148] [2022-11-23 14:05:35,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913995148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:35,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:35,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:05:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350798382] [2022-11-23 14:05:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:35,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:35,711 INFO L87 Difference]: Start difference. First operand 1231 states and 1498 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 14:05:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:39,247 INFO L93 Difference]: Finished difference Result 1232 states and 1501 transitions. [2022-11-23 14:05:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-11-23 14:05:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:39,257 INFO L225 Difference]: With dead ends: 1232 [2022-11-23 14:05:39,257 INFO L226 Difference]: Without dead ends: 1232 [2022-11-23 14:05:39,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:39,259 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1057 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:39,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 379 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-23 14:05:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-11-23 14:05:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1019. [2022-11-23 14:05:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 515 states have (on average 2.071844660194175) internal successors, (1067), 1014 states have internal predecessors, (1067), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1073 transitions. [2022-11-23 14:05:39,286 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1073 transitions. Word has length 7 [2022-11-23 14:05:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:39,287 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1073 transitions. [2022-11-23 14:05:39,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-23 14:05:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1073 transitions. [2022-11-23 14:05:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:05:39,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:39,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:39,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:39,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:39,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-23 14:05:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:39,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326870263] [2022-11-23 14:05:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:39,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 14:05:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:39,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:05:39,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:39,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:05:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:39,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:39,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:39,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326870263] [2022-11-23 14:05:39,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326870263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:39,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:39,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:05:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585647897] [2022-11-23 14:05:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:39,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:39,687 INFO L87 Difference]: Start difference. First operand 1019 states and 1073 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-23 14:05:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:42,467 INFO L93 Difference]: Finished difference Result 1348 states and 1431 transitions. [2022-11-23 14:05:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-11-23 14:05:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:42,476 INFO L225 Difference]: With dead ends: 1348 [2022-11-23 14:05:42,476 INFO L226 Difference]: Without dead ends: 1348 [2022-11-23 14:05:42,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:42,478 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 971 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1163 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 14:05:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-11-23 14:05:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 972. [2022-11-23 14:05:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 515 states have (on average 1.9805825242718447) internal successors, (1020), 967 states have internal predecessors, (1020), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1026 transitions. [2022-11-23 14:05:42,507 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1026 transitions. Word has length 8 [2022-11-23 14:05:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:42,508 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1026 transitions. [2022-11-23 14:05:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-23 14:05:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1026 transitions. [2022-11-23 14:05:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:05:42,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:42,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:42,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:42,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:42,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-23 14:05:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539039094] [2022-11-23 14:05:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:42,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:42,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:05:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:42,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:05:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:42,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:05:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:42,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:42,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:42,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539039094] [2022-11-23 14:05:42,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539039094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:42,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:42,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:05:42,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090714942] [2022-11-23 14:05:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:42,937 INFO L87 Difference]: Start difference. First operand 972 states and 1026 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-23 14:05:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:47,056 INFO L93 Difference]: Finished difference Result 1427 states and 1513 transitions. [2022-11-23 14:05:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:47,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-11-23 14:05:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:47,062 INFO L225 Difference]: With dead ends: 1427 [2022-11-23 14:05:47,062 INFO L226 Difference]: Without dead ends: 1427 [2022-11-23 14:05:47,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:47,063 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 674 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1538 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 14:05:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2022-11-23 14:05:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 994. [2022-11-23 14:05:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 547 states have (on average 1.9670932358318098) internal successors, (1076), 989 states have internal predecessors, (1076), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1082 transitions. [2022-11-23 14:05:47,089 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1082 transitions. Word has length 8 [2022-11-23 14:05:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:47,089 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1082 transitions. [2022-11-23 14:05:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-23 14:05:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1082 transitions. [2022-11-23 14:05:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:05:47,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:47,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:47,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:47,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:47,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-11-23 14:05:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660946771] [2022-11-23 14:05:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:47,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:47,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:47,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 14:05:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:47,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:05:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:47,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:47,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:47,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660946771] [2022-11-23 14:05:47,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660946771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:47,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031385612] [2022-11-23 14:05:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:47,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:47,574 INFO L87 Difference]: Start difference. First operand 994 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 14:05:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:48,451 INFO L93 Difference]: Finished difference Result 1445 states and 1566 transitions. [2022-11-23 14:05:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:05:48,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-23 14:05:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:48,457 INFO L225 Difference]: With dead ends: 1445 [2022-11-23 14:05:48,457 INFO L226 Difference]: Without dead ends: 1445 [2022-11-23 14:05:48,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:48,458 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 548 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:48,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2919 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:05:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-11-23 14:05:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1235. [2022-11-23 14:05:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 788 states have (on average 1.9441624365482233) internal successors, (1532), 1230 states have internal predecessors, (1532), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1538 transitions. [2022-11-23 14:05:48,487 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1538 transitions. Word has length 11 [2022-11-23 14:05:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:48,487 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1538 transitions. [2022-11-23 14:05:48,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 14:05:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1538 transitions. [2022-11-23 14:05:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:05:48,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:48,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:48,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-23 14:05:48,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:48,700 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash 35377727, now seen corresponding path program 1 times [2022-11-23 14:05:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:48,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715075513] [2022-11-23 14:05:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:48,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:48,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:48,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 14:05:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:48,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:05:48,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:48,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:48,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:48,919 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-23 14:05:48,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:05:48,976 INFO L350 Elim1Store]: Elim1 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 62 treesize of output 22 [2022-11-23 14:05:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:49,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:49,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:49,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715075513] [2022-11-23 14:05:49,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715075513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:49,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:49,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132060135] [2022-11-23 14:05:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:49,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:49,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:49,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:49,025 INFO L87 Difference]: Start difference. First operand 1235 states and 1538 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-23 14:05:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:50,966 INFO L93 Difference]: Finished difference Result 1591 states and 1953 transitions. [2022-11-23 14:05:50,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:50,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-23 14:05:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:50,971 INFO L225 Difference]: With dead ends: 1591 [2022-11-23 14:05:50,971 INFO L226 Difference]: Without dead ends: 1591 [2022-11-23 14:05:50,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:50,972 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 355 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:50,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2782 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 14:05:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2022-11-23 14:05:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1234. [2022-11-23 14:05:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 787 states have (on average 1.9440914866581958) internal successors, (1530), 1229 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1536 transitions. [2022-11-23 14:05:51,000 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1536 transitions. Word has length 12 [2022-11-23 14:05:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:51,000 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1536 transitions. [2022-11-23 14:05:51,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-23 14:05:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1536 transitions. [2022-11-23 14:05:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:05:51,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:51,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:51,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:51,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:51,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:51,215 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-23 14:05:51,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:51,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333232604] [2022-11-23 14:05:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:51,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:51,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:51,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:05:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:05:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:51,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:51,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333232604] [2022-11-23 14:05:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333232604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:51,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:51,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:05:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52787916] [2022-11-23 14:05:51,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:51,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:05:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:05:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:51,421 INFO L87 Difference]: Start difference. First operand 1234 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-23 14:05:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:51,457 INFO L93 Difference]: Finished difference Result 1174 states and 1450 transitions. [2022-11-23 14:05:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:05:51,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-11-23 14:05:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:51,462 INFO L225 Difference]: With dead ends: 1174 [2022-11-23 14:05:51,462 INFO L226 Difference]: Without dead ends: 1174 [2022-11-23 14:05:51,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:05:51,463 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 953 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:51,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 991 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:05:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-11-23 14:05:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2022-11-23 14:05:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 751 states have (on average 1.9227696404793608) internal successors, (1444), 1169 states have internal predecessors, (1444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1450 transitions. [2022-11-23 14:05:51,488 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1450 transitions. Word has length 18 [2022-11-23 14:05:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:51,489 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1450 transitions. [2022-11-23 14:05:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-23 14:05:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1450 transitions. [2022-11-23 14:05:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:05:51,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:51,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:05:51,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-23 14:05:51,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:51,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-23 14:05:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:51,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268347470] [2022-11-23 14:05:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:51,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:51,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:51,706 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:51,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 14:05:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:51,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:05:51,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:51,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:51,929 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:51,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268347470] [2022-11-23 14:05:51,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268347470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:51,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:51,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801235366] [2022-11-23 14:05:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:51,932 INFO L87 Difference]: Start difference. First operand 1174 states and 1450 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-23 14:05:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:52,023 INFO L93 Difference]: Finished difference Result 1146 states and 1394 transitions. [2022-11-23 14:05:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:52,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-23 14:05:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:52,028 INFO L225 Difference]: With dead ends: 1146 [2022-11-23 14:05:52,028 INFO L226 Difference]: Without dead ends: 1146 [2022-11-23 14:05:52,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:52,031 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 934 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:52,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1863 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:05:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-23 14:05:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2022-11-23 14:05:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 735 states have (on average 1.8857142857142857) internal successors, (1386), 1139 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1392 transitions. [2022-11-23 14:05:52,057 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1392 transitions. Word has length 20 [2022-11-23 14:05:52,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:52,057 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1392 transitions. [2022-11-23 14:05:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-23 14:05:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1392 transitions. [2022-11-23 14:05:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:05:52,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:52,058 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:05:52,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:52,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:52,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-23 14:05:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:52,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119540529] [2022-11-23 14:05:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:52,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:52,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:52,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:52,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 14:05:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:52,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:05:52,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:52,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:05:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:52,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:52,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:52,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119540529] [2022-11-23 14:05:52,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119540529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:52,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:52,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:05:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28584804] [2022-11-23 14:05:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:52,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:52,614 INFO L87 Difference]: Start difference. First operand 1144 states and 1392 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-23 14:05:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:55,309 INFO L93 Difference]: Finished difference Result 1605 states and 1974 transitions. [2022-11-23 14:05:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:05:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-23 14:05:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:55,316 INFO L225 Difference]: With dead ends: 1605 [2022-11-23 14:05:55,316 INFO L226 Difference]: Without dead ends: 1605 [2022-11-23 14:05:55,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:55,317 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1675 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:55,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 1002 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:05:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2022-11-23 14:05:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1140. [2022-11-23 14:05:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 735 states have (on average 1.874829931972789) internal successors, (1378), 1135 states have internal predecessors, (1378), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:05:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1384 transitions. [2022-11-23 14:05:55,359 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1384 transitions. Word has length 34 [2022-11-23 14:05:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:55,359 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1384 transitions. [2022-11-23 14:05:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-23 14:05:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1384 transitions. [2022-11-23 14:05:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:05:55,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:55,360 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:05:55,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:05:55,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:55,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:05:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-23 14:05:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:05:55,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273673552] [2022-11-23 14:05:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:05:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:05:55,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:05:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-23 14:05:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:05:55,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:05:55,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:05:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:05:56,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:05:56,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:05:56,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273673552] [2022-11-23 14:05:56,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273673552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:56,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:56,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:05:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907467029] [2022-11-23 14:05:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:05:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:56,012 INFO L87 Difference]: Start difference. First operand 1140 states and 1384 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-23 14:06:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:00,302 INFO L93 Difference]: Finished difference Result 1741 states and 2134 transitions. [2022-11-23 14:06:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:06:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-23 14:06:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:00,309 INFO L225 Difference]: With dead ends: 1741 [2022-11-23 14:06:00,309 INFO L226 Difference]: Without dead ends: 1741 [2022-11-23 14:06:00,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:00,310 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1158 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:00,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2007 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 14:06:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-11-23 14:06:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1136. [2022-11-23 14:06:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 735 states have (on average 1.8639455782312926) internal successors, (1370), 1131 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:06:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1376 transitions. [2022-11-23 14:06:00,335 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1376 transitions. Word has length 34 [2022-11-23 14:06:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:00,335 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1376 transitions. [2022-11-23 14:06:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-23 14:06:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1376 transitions. [2022-11-23 14:06:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 14:06:00,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:00,337 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:00,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:00,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-23 14:06:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:00,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22244584] [2022-11-23 14:06:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:00,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:00,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-23 14:06:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:00,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:06:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:00,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:00,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:00,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22244584] [2022-11-23 14:06:00,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22244584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:00,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:00,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746735595] [2022-11-23 14:06:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:00,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:00,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:00,906 INFO L87 Difference]: Start difference. First operand 1136 states and 1376 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 14:06:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:00,974 INFO L93 Difference]: Finished difference Result 1124 states and 1356 transitions. [2022-11-23 14:06:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:06:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-23 14:06:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:00,978 INFO L225 Difference]: With dead ends: 1124 [2022-11-23 14:06:00,979 INFO L226 Difference]: Without dead ends: 1124 [2022-11-23 14:06:00,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:00,980 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 903 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:00,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1841 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:06:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-23 14:06:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2022-11-23 14:06:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 723 states have (on average 1.8672199170124482) internal successors, (1350), 1119 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:06:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1356 transitions. [2022-11-23 14:06:01,000 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1356 transitions. Word has length 52 [2022-11-23 14:06:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:01,000 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1356 transitions. [2022-11-23 14:06:01,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 14:06:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1356 transitions. [2022-11-23 14:06:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 14:06:01,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:01,002 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:01,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:01,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-23 14:06:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:01,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724976413] [2022-11-23 14:06:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:01,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:01,207 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:01,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-23 14:06:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:06:01,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:01,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:06:01,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:06:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:02,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:06:02,238 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:06:02,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-23 14:06:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:02,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:02,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724976413] [2022-11-23 14:06:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724976413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:02,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:02,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:06:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149239304] [2022-11-23 14:06:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:02,260 INFO L87 Difference]: Start difference. First operand 1124 states and 1356 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-23 14:06:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:05,723 INFO L93 Difference]: Finished difference Result 1536 states and 1893 transitions. [2022-11-23 14:06:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:06:05,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-11-23 14:06:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:05,730 INFO L225 Difference]: With dead ends: 1536 [2022-11-23 14:06:05,730 INFO L226 Difference]: Without dead ends: 1536 [2022-11-23 14:06:05,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:05,731 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2042 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:05,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 460 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 14:06:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-11-23 14:06:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1054. [2022-11-23 14:06:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 691 states have (on average 1.8031837916063675) internal successors, (1246), 1049 states have internal predecessors, (1246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:06:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1252 transitions. [2022-11-23 14:06:05,750 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1252 transitions. Word has length 60 [2022-11-23 14:06:05,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:05,751 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1252 transitions. [2022-11-23 14:06:05,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-23 14:06:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1252 transitions. [2022-11-23 14:06:05,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:06:05,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:05,752 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:05,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:05,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:05,967 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-23 14:06:05,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:05,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081159165] [2022-11-23 14:06:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:05,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:05,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:05,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-23 14:06:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:06,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:06:06,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:06,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-23 14:06:06,274 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:06,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-23 14:06:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:06,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:06,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081159165] [2022-11-23 14:06:06,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081159165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:06,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:06,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815869591] [2022-11-23 14:06:06,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:06,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:06,324 INFO L87 Difference]: Start difference. First operand 1054 states and 1252 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:09,407 INFO L93 Difference]: Finished difference Result 1053 states and 1251 transitions. [2022-11-23 14:06:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:06:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-23 14:06:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:09,412 INFO L225 Difference]: With dead ends: 1053 [2022-11-23 14:06:09,412 INFO L226 Difference]: Without dead ends: 1053 [2022-11-23 14:06:09,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:09,413 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:09,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2229 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 14:06:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-23 14:06:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2022-11-23 14:06:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 691 states have (on average 1.8017366136034731) internal successors, (1245), 1048 states have internal predecessors, (1245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:06:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1251 transitions. [2022-11-23 14:06:09,431 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1251 transitions. Word has length 65 [2022-11-23 14:06:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:09,431 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1251 transitions. [2022-11-23 14:06:09,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1251 transitions. [2022-11-23 14:06:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:06:09,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:09,433 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:09,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:09,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-23 14:06:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:09,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046439802] [2022-11-23 14:06:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:09,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:09,650 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:09,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-23 14:06:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:10,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:06:10,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:10,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:06:10,054 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:10,078 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:10,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 14:06:10,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-23 14:06:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:10,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:10,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046439802] [2022-11-23 14:06:10,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046439802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:10,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:10,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:10,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094448299] [2022-11-23 14:06:10,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:10,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:10,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:10,177 INFO L87 Difference]: Start difference. First operand 1053 states and 1251 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:14,241 INFO L93 Difference]: Finished difference Result 1052 states and 1250 transitions. [2022-11-23 14:06:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:06:14,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-23 14:06:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:14,247 INFO L225 Difference]: With dead ends: 1052 [2022-11-23 14:06:14,247 INFO L226 Difference]: Without dead ends: 1052 [2022-11-23 14:06:14,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:14,248 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:14,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2270 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 14:06:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-23 14:06:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2022-11-23 14:06:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 690 states have (on average 1.8028985507246378) internal successors, (1244), 1047 states have internal predecessors, (1244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:06:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1250 transitions. [2022-11-23 14:06:14,267 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1250 transitions. Word has length 65 [2022-11-23 14:06:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:14,268 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1250 transitions. [2022-11-23 14:06:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1250 transitions. [2022-11-23 14:06:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 14:06:14,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:14,269 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:14,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:14,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:14,485 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash -337406705, now seen corresponding path program 1 times [2022-11-23 14:06:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:14,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828937615] [2022-11-23 14:06:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:14,487 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:14,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-23 14:06:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:14,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:06:14,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:14,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:14,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:14,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828937615] [2022-11-23 14:06:14,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828937615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:14,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:14,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587596192] [2022-11-23 14:06:14,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:14,882 INFO L87 Difference]: Start difference. First operand 1052 states and 1250 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:06:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:14,953 INFO L93 Difference]: Finished difference Result 1055 states and 1254 transitions. [2022-11-23 14:06:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:06:14,954 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-23 14:06:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:14,960 INFO L225 Difference]: With dead ends: 1055 [2022-11-23 14:06:14,960 INFO L226 Difference]: Without dead ends: 1055 [2022-11-23 14:06:14,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:14,961 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 2 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:14,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2629 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:06:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-11-23 14:06:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2022-11-23 14:06:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 692 states have (on average 1.8020231213872833) internal successors, (1247), 1050 states have internal predecessors, (1247), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:06:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1254 transitions. [2022-11-23 14:06:14,982 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1254 transitions. Word has length 73 [2022-11-23 14:06:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:14,983 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1254 transitions. [2022-11-23 14:06:14,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:06:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1254 transitions. [2022-11-23 14:06:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 14:06:14,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:14,984 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:15,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:15,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:15,200 INFO L85 PathProgramCache]: Analyzing trace with hash -842451762, now seen corresponding path program 1 times [2022-11-23 14:06:15,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:15,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633885453] [2022-11-23 14:06:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:15,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:15,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:15,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-23 14:06:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:15,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:06:15,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:15,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:15,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:15,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633885453] [2022-11-23 14:06:15,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633885453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:15,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1488117156] [2022-11-23 14:06:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:15,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:06:15,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:06:15,691 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:06:15,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-23 14:06:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:16,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:06:16,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:16,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:16,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1488117156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:16,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265854087] [2022-11-23 14:06:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:16,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:16,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:16,320 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:16,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 14:06:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:16,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:06:16,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:16,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:16,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265854087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:16,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:06:16,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-23 14:06:16,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643769673] [2022-11-23 14:06:16,773 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:06:16,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:06:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:16,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:06:16,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:06:16,774 INFO L87 Difference]: Start difference. First operand 1055 states and 1254 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:06:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:17,030 INFO L93 Difference]: Finished difference Result 1067 states and 1271 transitions. [2022-11-23 14:06:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:06:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-23 14:06:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:17,035 INFO L225 Difference]: With dead ends: 1067 [2022-11-23 14:06:17,035 INFO L226 Difference]: Without dead ends: 1067 [2022-11-23 14:06:17,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:06:17,037 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 14 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:17,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5250 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-23 14:06:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2022-11-23 14:06:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 701 states have (on average 1.8002853067047075) internal successors, (1262), 1059 states have internal predecessors, (1262), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:06:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1269 transitions. [2022-11-23 14:06:17,055 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1269 transitions. Word has length 74 [2022-11-23 14:06:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:17,056 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1269 transitions. [2022-11-23 14:06:17,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:06:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1269 transitions. [2022-11-23 14:06:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 14:06:17,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:17,057 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:17,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:17,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:17,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:17,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:17,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:06:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 137170127, now seen corresponding path program 2 times [2022-11-23 14:06:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:17,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111008927] [2022-11-23 14:06:17,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:06:17,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:06:17,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:17,672 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:06:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-23 14:06:18,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:06:18,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:06:18,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:06:18,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:18,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:18,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:18,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111008927] [2022-11-23 14:06:18,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111008927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:18,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1443112827] [2022-11-23 14:06:18,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:06:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:06:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:06:18,517 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:06:18,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-23 14:06:20,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:06:20,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:06:20,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:06:20,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:20,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:20,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1443112827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:20,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118111901] [2022-11-23 14:06:20,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:06:20,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:20,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:20,511 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:20,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 14:06:39,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:06:39,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:06:39,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 14:06:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:39,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:06:39,306 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:06:39,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-23 14:06:39,361 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:39,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:39,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-23 14:06:39,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-23 14:06:39,859 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588))) (exists ((v_ArrVal_1589 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1589))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:39,875 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:39,892 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:39,955 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:06:39,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-23 14:06:39,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-23 14:06:40,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-23 14:06:40,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 14:06:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-23 14:06:40,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:40,580 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1605) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1604) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-23 14:06:40,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118111901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:40,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-23 14:06:40,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-23 14:06:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398778189] [2022-11-23 14:06:40,590 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-23 14:06:40,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 14:06:40,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:40,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 14:06:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-11-23 14:06:40,591 INFO L87 Difference]: Start difference. First operand 1065 states and 1269 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:06:43,758 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1586 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1586) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1587 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1587) |c_#memory_$Pointer$.offset|)) (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:44,021 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:44,407 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1588 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1588))) (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1589 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1589))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:06:44,426 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1593 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1593))) (exists ((v_ArrVal_1591 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1591))) (exists ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1592) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1590 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1590))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:07:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:12,456 INFO L93 Difference]: Finished difference Result 2843 states and 3504 transitions. [2022-11-23 14:07:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 14:07:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-11-23 14:07:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:12,466 INFO L225 Difference]: With dead ends: 2843 [2022-11-23 14:07:12,466 INFO L226 Difference]: Without dead ends: 2831 [2022-11-23 14:07:12,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=445, Invalid=2603, Unknown=64, NotChecked=920, Total=4032 [2022-11-23 14:07:12,468 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 2151 mSDsluCounter, 7481 mSDsCounter, 0 mSdLazyCounter, 10877 mSolverCounterSat, 56 mSolverCounterUnsat, 538 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 8339 SdHoareTripleChecker+Invalid, 15577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 10877 IncrementalHoareTripleChecker+Invalid, 538 IncrementalHoareTripleChecker+Unknown, 4106 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:12,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 8339 Invalid, 15577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 10877 Invalid, 538 Unknown, 4106 Unchecked, 29.1s Time] [2022-11-23 14:07:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-11-23 14:07:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1082. [2022-11-23 14:07:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 717 states have (on average 1.786610878661088) internal successors, (1281), 1075 states have internal predecessors, (1281), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 14:07:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1289 transitions. [2022-11-23 14:07:12,497 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1289 transitions. Word has length 77 [2022-11-23 14:07:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:12,498 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1289 transitions. [2022-11-23 14:07:12,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:07:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1289 transitions. [2022-11-23 14:07:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 14:07:12,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:12,499 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:12,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:12,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-23 14:07:12,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:07:13,116 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:07:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 203603054, now seen corresponding path program 1 times [2022-11-23 14:07:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:07:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639904897] [2022-11-23 14:07:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:13,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:07:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:07:13,118 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:07:13,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-23 14:07:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:13,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:07:13,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:13,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:14,477 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:07:14,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639904897] [2022-11-23 14:07:14,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639904897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:14,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052534027] [2022-11-23 14:07:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:14,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:07:14,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:07:14,479 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:07:14,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-23 14:07:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:07:15,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:15,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:15,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1052534027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666236662] [2022-11-23 14:07:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:15,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:15,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:15,621 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:15,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 14:07:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:16,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:07:16,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:16,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:17,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666236662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:17,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:07:17,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-23 14:07:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817077151] [2022-11-23 14:07:17,540 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-23 14:07:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:07:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-23 14:07:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:07:17,543 INFO L87 Difference]: Start difference. First operand 1082 states and 1289 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:07:21,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:21,847 INFO L93 Difference]: Finished difference Result 1118 states and 1335 transitions. [2022-11-23 14:07:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 14:07:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2022-11-23 14:07:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:21,852 INFO L225 Difference]: With dead ends: 1118 [2022-11-23 14:07:21,852 INFO L226 Difference]: Without dead ends: 1110 [2022-11-23 14:07:21,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-11-23 14:07:21,854 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 165 mSDsluCounter, 11470 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:21,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 12357 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:07:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-23 14:07:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1092. [2022-11-23 14:07:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 728 states have (on average 1.776098901098901) internal successors, (1293), 1086 states have internal predecessors, (1293), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:07:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1300 transitions. [2022-11-23 14:07:21,872 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1300 transitions. Word has length 83 [2022-11-23 14:07:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:21,873 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1300 transitions. [2022-11-23 14:07:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 14:07:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1300 transitions. [2022-11-23 14:07:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:07:21,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:21,875 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:21,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:22,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:22,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:22,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:07:22,481 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-23 14:07:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1451848623, now seen corresponding path program 3 times [2022-11-23 14:07:22,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:07:22,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660155599] [2022-11-23 14:07:22,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:07:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:07:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:07:22,485 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:07:22,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-23 14:07:24,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-23 14:07:24,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:07:24,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 14:07:24,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:24,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:28,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:07:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660155599] [2022-11-23 14:07:28,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660155599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865790154] [2022-11-23 14:07:28,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:07:28,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:07:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:07:28,463 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:07:28,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-23 14:08:01,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-23 14:08:01,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:08:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 14:08:01,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:08:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:01,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:08:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:02,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [865790154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:08:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912143535] [2022-11-23 14:08:02,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:08:02,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:08:02,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:02,785 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:08:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6c7cde-cb2b-4735-a279-1517b04ed91d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process