./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:16:01,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:16:01,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:16:01,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:16:01,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:16:02,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:16:02,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:16:02,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:16:02,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:16:02,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:16:02,014 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:16:02,015 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:16:02,015 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:16:02,016 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:16:02,016 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:16:02,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:16:02,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:16:02,018 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:16:02,018 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:16:02,019 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:16:02,019 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:16:02,020 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:16:02,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:16:02,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:16:02,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:16:02,022 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:16:02,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:16:02,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:16:02,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:16:02,024 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:16:02,024 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:16:02,025 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:16:02,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:16:02,026 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:16:02,026 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:16:02,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:16:02,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:16:02,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:16:02,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:16:02,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:02,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:16:02,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:16:02,029 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:16:02,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:16:02,030 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:16:02,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:16:02,030 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 05:16:02,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:16:02,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:16:02,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:16:02,357 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:16:02,358 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:16:02,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2023-11-19 05:16:05,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:16:05,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:16:05,712 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2023-11-19 05:16:05,732 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/a095aa400/2f2fca427746499bb69cff2ff6ce37b4/FLAG42588d3c3 [2023-11-19 05:16:05,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/a095aa400/2f2fca427746499bb69cff2ff6ce37b4 [2023-11-19 05:16:05,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:16:05,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:16:05,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:05,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:16:05,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:16:05,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:05" (1/1) ... [2023-11-19 05:16:05,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b97d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:05, skipping insertion in model container [2023-11-19 05:16:05,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:05" (1/1) ... [2023-11-19 05:16:05,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:06,238 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:16:06,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:06,531 ERROR L324 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) [2023-11-19 05:16:06,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62a78507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:06, skipping insertion in model container [2023-11-19 05:16:06,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:06,534 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:16:06,536 INFO L158 Benchmark]: Toolchain (without parser) took 784.09ms. Allocated memory is still 169.9MB. Free memory was 133.3MB in the beginning and 123.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 05:16:06,537 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 92.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:16:06,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 781.58ms. Allocated memory is still 169.9MB. Free memory was 132.7MB in the beginning and 123.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 05:16:06,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 92.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 781.58ms. Allocated memory is still 169.9MB. Free memory was 132.7MB in the beginning and 123.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 738]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:16:08,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:16:09,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:16:09,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:16:09,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:16:09,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:16:09,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:16:09,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:16:09,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:16:09,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:16:09,150 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:16:09,150 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:16:09,150 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:16:09,152 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:16:09,152 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:16:09,153 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:16:09,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:16:09,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:16:09,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:16:09,155 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:16:09,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:16:09,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:16:09,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:16:09,157 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:16:09,157 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:16:09,157 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:16:09,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:16:09,158 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:16:09,158 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:16:09,159 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:16:09,160 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:16:09,160 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:16:09,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:16:09,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:16:09,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:16:09,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:16:09,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:09,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:16:09,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:16:09,163 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:16:09,163 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:16:09,163 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:16:09,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:16:09,164 INFO L153 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_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 05:16:09,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:16:09,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:16:09,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:16:09,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:16:09,611 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:16:09,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2023-11-19 05:16:12,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:16:13,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:16:13,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2023-11-19 05:16:13,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/6e28a6410/77a6d27f98084676ab445546c3b89ac1/FLAGc9190578c [2023-11-19 05:16:13,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/data/6e28a6410/77a6d27f98084676ab445546c3b89ac1 [2023-11-19 05:16:13,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:16:13,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:16:13,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:13,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:16:13,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:16:13,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:13" (1/1) ... [2023-11-19 05:16:13,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4294571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:13, skipping insertion in model container [2023-11-19 05:16:13,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:13" (1/1) ... [2023-11-19 05:16:13,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:13,656 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:16:14,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:14,046 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:16:14,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:14,078 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:16:14,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:14,159 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:16:14,191 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:16:14,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:14,347 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:14,355 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:16:14,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14 WrapperNode [2023-11-19 05:16:14,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:14,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:14,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:16:14,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:16:14,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,524 INFO L138 Inliner]: procedures = 181, calls = 229, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 758 [2023-11-19 05:16:14,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:14,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:16:14,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:16:14,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:16:14,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:16:14,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:16:14,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:16:14,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:16:14,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (1/1) ... [2023-11-19 05:16:14,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:14,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:14,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:16:14,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:16:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:16:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:16:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:16:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:16:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:16:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:16:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:16:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:16:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:16:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:16:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:16:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:16:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:16:14,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:16:14,949 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:16:14,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:16:14,956 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:16:18,728 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:16:18,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:16:18,743 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 05:16:18,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:18 BoogieIcfgContainer [2023-11-19 05:16:18,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:16:18,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:16:18,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:16:18,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:16:18,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:13" (1/3) ... [2023-11-19 05:16:18,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0b4bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:18, skipping insertion in model container [2023-11-19 05:16:18,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:14" (2/3) ... [2023-11-19 05:16:18,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0b4bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:18, skipping insertion in model container [2023-11-19 05:16:18,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:18" (3/3) ... [2023-11-19 05:16:18,761 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-2.i [2023-11-19 05:16:18,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:16:18,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2023-11-19 05:16:18,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:16:18,847 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;@123ea61d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:16:18,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2023-11-19 05:16:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 853 states, 416 states have (on average 2.237980769230769) internal successors, (931), 848 states have internal predecessors, (931), 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) [2023-11-19 05:16:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:16:18,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:18,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:16:18,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:18,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 05:16:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085659599] [2023-11-19 05:16:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:18,882 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 [2023-11-19 05:16:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:18,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:18,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:19,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:16:19,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:19,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:19,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085659599] [2023-11-19 05:16:19,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085659599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:19,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:19,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:16:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027538159] [2023-11-19 05:16:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:19,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:16:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:16:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:16:19,142 INFO L87 Difference]: Start difference. First operand has 853 states, 416 states have (on average 2.237980769230769) internal successors, (931), 848 states have internal predecessors, (931), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:16:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:19,211 INFO L93 Difference]: Finished difference Result 843 states and 881 transitions. [2023-11-19 05:16:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:16:19,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:16:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:19,233 INFO L225 Difference]: With dead ends: 843 [2023-11-19 05:16:19,233 INFO L226 Difference]: Without dead ends: 841 [2023-11-19 05:16:19,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:16:19,242 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:19,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:16:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-19 05:16:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2023-11-19 05:16:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 410 states have (on average 2.129268292682927) internal successors, (873), 836 states have internal predecessors, (873), 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) [2023-11-19 05:16:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 879 transitions. [2023-11-19 05:16:19,336 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 879 transitions. Word has length 5 [2023-11-19 05:16:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:19,337 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 879 transitions. [2023-11-19 05:16:19,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:16:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 879 transitions. [2023-11-19 05:16:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:16:19,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:19,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:16:19,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:19,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 05:16:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:19,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593350696] [2023-11-19 05:16:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:19,542 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 [2023-11-19 05:16:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:19,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:19,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:19,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:19,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:19,766 INFO L378 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 [2023-11-19 05:16:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:19,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:19,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593350696] [2023-11-19 05:16:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593350696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:19,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:19,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:16:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052163834] [2023-11-19 05:16:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:19,793 INFO L87 Difference]: Start difference. First operand 841 states and 879 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:16:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:21,420 INFO L93 Difference]: Finished difference Result 802 states and 841 transitions. [2023-11-19 05:16:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 05:16:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:21,427 INFO L225 Difference]: With dead ends: 802 [2023-11-19 05:16:21,427 INFO L226 Difference]: Without dead ends: 802 [2023-11-19 05:16:21,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:21,429 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 579 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:21,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 632 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 05:16:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-11-19 05:16:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 792. [2023-11-19 05:16:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 410 states have (on average 2.0097560975609756) internal successors, (824), 787 states have internal predecessors, (824), 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) [2023-11-19 05:16:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 830 transitions. [2023-11-19 05:16:21,485 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 830 transitions. Word has length 5 [2023-11-19 05:16:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:21,485 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 830 transitions. [2023-11-19 05:16:21,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:16:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 830 transitions. [2023-11-19 05:16:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:16:21,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:21,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:16:21,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:21,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:21,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 05:16:21,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:21,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165207672] [2023-11-19 05:16:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:21,691 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 [2023-11-19 05:16:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:21,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:21,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:21,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:21,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:21,813 INFO L378 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 [2023-11-19 05:16:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:21,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:21,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:21,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165207672] [2023-11-19 05:16:21,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165207672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:21,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:16:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148904862] [2023-11-19 05:16:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:21,847 INFO L87 Difference]: Start difference. First operand 792 states and 830 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:16:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:23,901 INFO L93 Difference]: Finished difference Result 861 states and 903 transitions. [2023-11-19 05:16:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 05:16:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:23,906 INFO L225 Difference]: With dead ends: 861 [2023-11-19 05:16:23,907 INFO L226 Difference]: Without dead ends: 861 [2023-11-19 05:16:23,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:23,908 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 262 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:23,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 989 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 05:16:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-19 05:16:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 813. [2023-11-19 05:16:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 442 states have (on average 1.98868778280543) internal successors, (879), 808 states have internal predecessors, (879), 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) [2023-11-19 05:16:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 885 transitions. [2023-11-19 05:16:23,932 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 885 transitions. Word has length 5 [2023-11-19 05:16:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:23,933 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 885 transitions. [2023-11-19 05:16:23,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:16:23,933 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 885 transitions. [2023-11-19 05:16:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:16:23,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:23,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:16:23,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:16:24,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:24,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1156743050, now seen corresponding path program 1 times [2023-11-19 05:16:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:24,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389864542] [2023-11-19 05:16:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:24,138 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 [2023-11-19 05:16:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:24,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:24,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:24,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:24,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:24,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:24,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389864542] [2023-11-19 05:16:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389864542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:24,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926235265] [2023-11-19 05:16:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:24,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:24,238 INFO L87 Difference]: Start difference. First operand 813 states and 885 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-19 05:16:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:24,301 INFO L93 Difference]: Finished difference Result 1401 states and 1533 transitions. [2023-11-19 05:16:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:24,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-19 05:16:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:24,311 INFO L225 Difference]: With dead ends: 1401 [2023-11-19 05:16:24,311 INFO L226 Difference]: Without dead ends: 1401 [2023-11-19 05:16:24,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:24,313 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 575 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:24,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1630 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:16:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-11-19 05:16:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 814. [2023-11-19 05:16:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 443 states have (on average 1.9864559819413092) internal successors, (880), 809 states have internal predecessors, (880), 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) [2023-11-19 05:16:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 886 transitions. [2023-11-19 05:16:24,341 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 886 transitions. Word has length 6 [2023-11-19 05:16:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:24,341 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 886 transitions. [2023-11-19 05:16:24,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-19 05:16:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 886 transitions. [2023-11-19 05:16:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:16:24,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:24,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:24,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:24,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 47654077, now seen corresponding path program 1 times [2023-11-19 05:16:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790512673] [2023-11-19 05:16:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:24,546 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 [2023-11-19 05:16:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:24,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:24,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:24,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:24,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:24,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:24,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:24,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790512673] [2023-11-19 05:16:24,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790512673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:24,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:24,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:24,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005456929] [2023-11-19 05:16:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:24,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:24,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:24,706 INFO L87 Difference]: Start difference. First operand 814 states and 886 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-11-19 05:16:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:24,742 INFO L93 Difference]: Finished difference Result 772 states and 843 transitions. [2023-11-19 05:16:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:24,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-11-19 05:16:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:24,747 INFO L225 Difference]: With dead ends: 772 [2023-11-19 05:16:24,747 INFO L226 Difference]: Without dead ends: 772 [2023-11-19 05:16:24,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:24,748 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 81 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:24,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1456 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:16:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-11-19 05:16:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-11-19 05:16:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 425 states have (on average 1.9694117647058824) internal successors, (837), 767 states have internal predecessors, (837), 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) [2023-11-19 05:16:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 843 transitions. [2023-11-19 05:16:24,769 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 843 transitions. Word has length 15 [2023-11-19 05:16:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:24,769 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 843 transitions. [2023-11-19 05:16:24,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-11-19 05:16:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 843 transitions. [2023-11-19 05:16:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:16:24,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:24,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:24,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:24,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:24,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1449076233, now seen corresponding path program 1 times [2023-11-19 05:16:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974643518] [2023-11-19 05:16:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:24,976 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 [2023-11-19 05:16:24,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:24,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:24,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:25,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:25,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:25,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:25,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974643518] [2023-11-19 05:16:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974643518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:25,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:25,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:16:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070438899] [2023-11-19 05:16:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:25,144 INFO L87 Difference]: Start difference. First operand 772 states and 843 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-19 05:16:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:25,233 INFO L93 Difference]: Finished difference Result 751 states and 815 transitions. [2023-11-19 05:16:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:25,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-19 05:16:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:25,238 INFO L225 Difference]: With dead ends: 751 [2023-11-19 05:16:25,238 INFO L226 Difference]: Without dead ends: 751 [2023-11-19 05:16:25,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:25,239 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 62 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:25,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2123 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:16:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-19 05:16:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 750. [2023-11-19 05:16:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 417 states have (on average 1.9376498800959232) internal successors, (808), 745 states have internal predecessors, (808), 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) [2023-11-19 05:16:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 814 transitions. [2023-11-19 05:16:25,259 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 814 transitions. Word has length 17 [2023-11-19 05:16:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:25,260 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 814 transitions. [2023-11-19 05:16:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-19 05:16:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 814 transitions. [2023-11-19 05:16:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:16:25,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:25,261 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] [2023-11-19 05:16:25,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:25,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:25,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:25,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -446198651, now seen corresponding path program 1 times [2023-11-19 05:16:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986224085] [2023-11-19 05:16:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:25,465 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 [2023-11-19 05:16:25,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:25,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:25,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:25,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:25,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:25,617 INFO L378 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 [2023-11-19 05:16:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:25,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:25,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986224085] [2023-11-19 05:16:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986224085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:25,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:25,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031895221] [2023-11-19 05:16:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:25,740 INFO L87 Difference]: Start difference. First operand 750 states and 814 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-19 05:16:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:27,661 INFO L93 Difference]: Finished difference Result 756 states and 821 transitions. [2023-11-19 05:16:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-19 05:16:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:27,665 INFO L225 Difference]: With dead ends: 756 [2023-11-19 05:16:27,666 INFO L226 Difference]: Without dead ends: 756 [2023-11-19 05:16:27,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:27,667 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 503 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:27,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 897 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 05:16:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-19 05:16:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 746. [2023-11-19 05:16:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 417 states have (on average 1.9280575539568345) internal successors, (804), 741 states have internal predecessors, (804), 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) [2023-11-19 05:16:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 810 transitions. [2023-11-19 05:16:27,704 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 810 transitions. Word has length 31 [2023-11-19 05:16:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:27,705 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 810 transitions. [2023-11-19 05:16:27,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-19 05:16:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 810 transitions. [2023-11-19 05:16:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:16:27,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:27,707 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] [2023-11-19 05:16:27,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:27,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:27,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:27,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash -446198650, now seen corresponding path program 1 times [2023-11-19 05:16:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:27,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165870120] [2023-11-19 05:16:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:27,913 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 [2023-11-19 05:16:27,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:27,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:27,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:28,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:16:28,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:28,091 INFO L378 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 [2023-11-19 05:16:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:28,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:28,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165870120] [2023-11-19 05:16:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165870120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:28,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:28,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897924970] [2023-11-19 05:16:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:28,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:28,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:28,341 INFO L87 Difference]: Start difference. First operand 746 states and 810 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-19 05:16:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:30,829 INFO L93 Difference]: Finished difference Result 790 states and 824 transitions. [2023-11-19 05:16:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:30,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-19 05:16:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:30,834 INFO L225 Difference]: With dead ends: 790 [2023-11-19 05:16:30,834 INFO L226 Difference]: Without dead ends: 790 [2023-11-19 05:16:30,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:30,835 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 189 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:30,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1271 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 05:16:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-19 05:16:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 742. [2023-11-19 05:16:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 417 states have (on average 1.9184652278177459) internal successors, (800), 737 states have internal predecessors, (800), 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) [2023-11-19 05:16:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 806 transitions. [2023-11-19 05:16:30,854 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 806 transitions. Word has length 31 [2023-11-19 05:16:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 806 transitions. [2023-11-19 05:16:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-19 05:16:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 806 transitions. [2023-11-19 05:16:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 05:16:30,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:30,856 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] [2023-11-19 05:16:30,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:31,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:31,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash -289243905, now seen corresponding path program 1 times [2023-11-19 05:16:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:31,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560966403] [2023-11-19 05:16:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:31,064 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 [2023-11-19 05:16:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:31,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:31,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:31,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:31,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:31,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:31,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560966403] [2023-11-19 05:16:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560966403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:31,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:16:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231937449] [2023-11-19 05:16:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:31,360 INFO L87 Difference]: Start difference. First operand 742 states and 806 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:31,429 INFO L93 Difference]: Finished difference Result 736 states and 796 transitions. [2023-11-19 05:16:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:31,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 05:16:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:31,434 INFO L225 Difference]: With dead ends: 736 [2023-11-19 05:16:31,434 INFO L226 Difference]: Without dead ends: 736 [2023-11-19 05:16:31,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:31,437 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 31 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:31,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2101 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:16:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-11-19 05:16:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-11-19 05:16:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 411 states have (on average 1.9221411192214113) internal successors, (790), 731 states have internal predecessors, (790), 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) [2023-11-19 05:16:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 796 transitions. [2023-11-19 05:16:31,458 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 796 transitions. Word has length 47 [2023-11-19 05:16:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:31,460 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 796 transitions. [2023-11-19 05:16:31,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 796 transitions. [2023-11-19 05:16:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:16:31,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:31,466 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] [2023-11-19 05:16:31,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:31,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:31,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash -572234293, now seen corresponding path program 1 times [2023-11-19 05:16:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466282824] [2023-11-19 05:16:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:31,671 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 [2023-11-19 05:16:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:31,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:31,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:31,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:32,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:32,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:32,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466282824] [2023-11-19 05:16:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466282824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:32,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:32,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748842041] [2023-11-19 05:16:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:32,197 INFO L87 Difference]: Start difference. First operand 736 states and 796 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-19 05:16:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:32,434 INFO L93 Difference]: Finished difference Result 984 states and 1053 transitions. [2023-11-19 05:16:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-11-19 05:16:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:32,439 INFO L225 Difference]: With dead ends: 984 [2023-11-19 05:16:32,439 INFO L226 Difference]: Without dead ends: 984 [2023-11-19 05:16:32,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:32,440 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 271 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:32,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1394 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:16:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-11-19 05:16:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 787. [2023-11-19 05:16:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 462 states have (on average 1.8203463203463204) internal successors, (841), 782 states have internal predecessors, (841), 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) [2023-11-19 05:16:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 847 transitions. [2023-11-19 05:16:32,462 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 847 transitions. Word has length 55 [2023-11-19 05:16:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:32,462 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 847 transitions. [2023-11-19 05:16:32,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-19 05:16:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 847 transitions. [2023-11-19 05:16:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 05:16:32,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:32,464 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] [2023-11-19 05:16:32,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:16:32,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:32,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:32,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:32,669 INFO L85 PathProgramCache]: Analyzing trace with hash -814100751, now seen corresponding path program 1 times [2023-11-19 05:16:32,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:32,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973360053] [2023-11-19 05:16:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:32,670 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 [2023-11-19 05:16:32,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:32,671 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:32,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:33,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:16:33,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:33,059 INFO L378 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 [2023-11-19 05:16:33,067 INFO L378 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 [2023-11-19 05:16:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:16:33,706 INFO L378 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 14 treesize of output 9 [2023-11-19 05:16:33,726 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:16:33,726 INFO L378 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 [2023-11-19 05:16:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:33,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:33,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973360053] [2023-11-19 05:16:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973360053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:33,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:16:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282166881] [2023-11-19 05:16:33,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:33,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:33,751 INFO L87 Difference]: Start difference. First operand 787 states and 847 transitions. Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-19 05:16:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:35,529 INFO L93 Difference]: Finished difference Result 759 states and 820 transitions. [2023-11-19 05:16:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:35,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2023-11-19 05:16:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:35,533 INFO L225 Difference]: With dead ends: 759 [2023-11-19 05:16:35,534 INFO L226 Difference]: Without dead ends: 759 [2023-11-19 05:16:35,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:35,535 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 786 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:35,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 499 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:16:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-11-19 05:16:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 717. [2023-11-19 05:16:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 430 states have (on average 1.713953488372093) internal successors, (737), 712 states have internal predecessors, (737), 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) [2023-11-19 05:16:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 743 transitions. [2023-11-19 05:16:35,552 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 743 transitions. Word has length 58 [2023-11-19 05:16:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 743 transitions. [2023-11-19 05:16:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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) [2023-11-19 05:16:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 743 transitions. [2023-11-19 05:16:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:16:35,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:35,555 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] [2023-11-19 05:16:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:35,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:35,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash 583834271, now seen corresponding path program 1 times [2023-11-19 05:16:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:35,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100710307] [2023-11-19 05:16:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:35,763 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 [2023-11-19 05:16:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:35,764 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:35,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:36,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 05:16:36,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:36,024 INFO L378 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 [2023-11-19 05:16:36,044 INFO L378 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 [2023-11-19 05:16:36,055 INFO L378 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 19 treesize of output 1 [2023-11-19 05:16:36,106 INFO L378 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 [2023-11-19 05:16:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:36,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:36,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100710307] [2023-11-19 05:16:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100710307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:36,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:36,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:16:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199193890] [2023-11-19 05:16:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:16:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:16:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:36,130 INFO L87 Difference]: Start difference. First operand 717 states and 743 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2023-11-19 05:16:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:38,839 INFO L93 Difference]: Finished difference Result 716 states and 742 transitions. [2023-11-19 05:16:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:16:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2023-11-19 05:16:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:38,843 INFO L225 Difference]: With dead ends: 716 [2023-11-19 05:16:38,843 INFO L226 Difference]: Without dead ends: 716 [2023-11-19 05:16:38,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:16:38,844 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 4 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:38,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1735 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:16:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-19 05:16:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2023-11-19 05:16:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 711 states have internal predecessors, (736), 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) [2023-11-19 05:16:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 742 transitions. [2023-11-19 05:16:38,861 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 742 transitions. Word has length 63 [2023-11-19 05:16:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:38,862 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 742 transitions. [2023-11-19 05:16:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2023-11-19 05:16:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 742 transitions. [2023-11-19 05:16:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:16:38,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:38,863 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] [2023-11-19 05:16:38,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:39,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:39,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 583834270, now seen corresponding path program 1 times [2023-11-19 05:16:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623969115] [2023-11-19 05:16:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:39,070 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 [2023-11-19 05:16:39,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:39,071 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:39,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:39,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:16:39,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:39,358 INFO L378 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 [2023-11-19 05:16:39,375 INFO L378 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 19 treesize of output 1 [2023-11-19 05:16:39,404 INFO L378 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 [2023-11-19 05:16:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:39,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:39,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623969115] [2023-11-19 05:16:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623969115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:39,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:16:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764887571] [2023-11-19 05:16:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:16:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:16:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:39,419 INFO L87 Difference]: Start difference. First operand 716 states and 742 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2023-11-19 05:16:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:41,742 INFO L93 Difference]: Finished difference Result 715 states and 741 transitions. [2023-11-19 05:16:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:16:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2023-11-19 05:16:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:41,746 INFO L225 Difference]: With dead ends: 715 [2023-11-19 05:16:41,747 INFO L226 Difference]: Without dead ends: 715 [2023-11-19 05:16:41,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:16:41,748 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 2 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:41,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1707 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 05:16:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-19 05:16:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-11-19 05:16:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 429 states have (on average 1.7132867132867133) internal successors, (735), 710 states have internal predecessors, (735), 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) [2023-11-19 05:16:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 741 transitions. [2023-11-19 05:16:41,762 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 741 transitions. Word has length 63 [2023-11-19 05:16:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:41,763 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 741 transitions. [2023-11-19 05:16:41,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2023-11-19 05:16:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 741 transitions. [2023-11-19 05:16:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:16:41,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:41,764 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] [2023-11-19 05:16:41,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:41,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:41,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash 921168581, now seen corresponding path program 1 times [2023-11-19 05:16:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:41,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190585136] [2023-11-19 05:16:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:41,970 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 [2023-11-19 05:16:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:41,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:41,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:42,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:42,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:42,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:42,286 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190585136] [2023-11-19 05:16:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190585136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:42,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:16:42,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638125523] [2023-11-19 05:16:42,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:42,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:42,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:16:42,289 INFO L87 Difference]: Start difference. First operand 715 states and 741 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-19 05:16:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:42,362 INFO L93 Difference]: Finished difference Result 718 states and 745 transitions. [2023-11-19 05:16:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2023-11-19 05:16:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:42,373 INFO L225 Difference]: With dead ends: 718 [2023-11-19 05:16:42,373 INFO L226 Difference]: Without dead ends: 718 [2023-11-19 05:16:42,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:42,374 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 2 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2053 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 [2023-11-19 05:16:42,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2053 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:16:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-11-19 05:16:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2023-11-19 05:16:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 431 states have (on average 1.7122969837587008) internal successors, (738), 713 states have internal predecessors, (738), 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) [2023-11-19 05:16:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 745 transitions. [2023-11-19 05:16:42,397 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 745 transitions. Word has length 71 [2023-11-19 05:16:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:42,398 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 745 transitions. [2023-11-19 05:16:42,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-19 05:16:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 745 transitions. [2023-11-19 05:16:42,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 05:16:42,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:42,399 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] [2023-11-19 05:16:42,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:42,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:42,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:42,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash -145012940, now seen corresponding path program 1 times [2023-11-19 05:16:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391923110] [2023-11-19 05:16:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:42,605 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 [2023-11-19 05:16:42,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:42,606 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:42,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:42,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:42,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:42,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391923110] [2023-11-19 05:16:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391923110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1521343308] [2023-11-19 05:16:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:42,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:16:42,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:16:42,998 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:16:43,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-19 05:16:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:43,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:43,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:43,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1521343308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277121602] [2023-11-19 05:16:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:43,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:43,553 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:43,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 05:16:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:43,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:16:43,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:43,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:43,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277121602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:43,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:16:43,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-19 05:16:43,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45776406] [2023-11-19 05:16:43,877 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:16:43,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:16:43,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:16:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:16:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:16:43,879 INFO L87 Difference]: Start difference. First operand 718 states and 745 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2023-11-19 05:16:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:44,076 INFO L93 Difference]: Finished difference Result 730 states and 762 transitions. [2023-11-19 05:16:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:16:44,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2023-11-19 05:16:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:44,081 INFO L225 Difference]: With dead ends: 730 [2023-11-19 05:16:44,081 INFO L226 Difference]: Without dead ends: 730 [2023-11-19 05:16:44,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:16:44,082 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 9 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:44,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3417 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:16:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-19 05:16:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2023-11-19 05:16:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 440 states have (on average 1.7113636363636364) internal successors, (753), 722 states have internal predecessors, (753), 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) [2023-11-19 05:16:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 760 transitions. [2023-11-19 05:16:44,100 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 760 transitions. Word has length 72 [2023-11-19 05:16:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:44,100 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 760 transitions. [2023-11-19 05:16:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2023-11-19 05:16:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 760 transitions. [2023-11-19 05:16:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 05:16:44,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:44,102 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] [2023-11-19 05:16:44,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:16:44,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:44,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:16:44,717 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 05:16:44,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:44,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1729302149, now seen corresponding path program 2 times [2023-11-19 05:16:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:16:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179751777] [2023-11-19 05:16:44,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:16:44,718 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 [2023-11-19 05:16:44,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:16:44,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:16:44,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/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 (19)] Waiting until timeout for monitored process [2023-11-19 05:16:45,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:16:45,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:16:45,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:16:45,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:45,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:45,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:16:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179751777] [2023-11-19 05:16:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179751777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342360253] [2023-11-19 05:16:45,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:16:45,530 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:16:45,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:16:45,534 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:16:45,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-19 05:16:46,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:16:46,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:16:46,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:16:46,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:46,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342360253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826331132] [2023-11-19 05:16:46,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:16:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:46,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:46,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65dc332-4e61-4597-bbc7-387dd2c8feb8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 05:16:57,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:16:57,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:16:57,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:16:57,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:58,062 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:16:58,062 INFO L378 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 [2023-11-19 05:16:58,102 INFO L378 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 19 treesize of output 1