./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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_b3d1104f-837f-425a-bb9d-db570d055c46/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 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:35,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:35,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:51:35,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:35,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:35,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:35,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:35,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:35,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:35,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:35,808 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:35,808 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:35,809 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:35,810 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:35,810 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:35,811 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:35,812 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:35,812 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:35,813 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:35,814 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:35,815 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:35,815 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:35,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:35,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:35,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:35,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:35,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:35,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:35,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:35,820 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:35,821 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:35,821 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:35,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:35,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:35,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:35,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:35,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:35,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:35,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:35,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:35,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:35,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:35,826 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:35,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:35,826 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:35,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:35,827 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_b3d1104f-837f-425a-bb9d-db570d055c46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 [2023-11-19 04:51:36,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:36,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:36,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:36,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:36,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:36,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-11-19 04:51:39,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:39,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:39,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-11-19 04:51:39,732 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/6b39b14a5/7f9eaac0d60d42b19bae6d1bb3195c5a/FLAG4723a347a [2023-11-19 04:51:39,752 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/6b39b14a5/7f9eaac0d60d42b19bae6d1bb3195c5a [2023-11-19 04:51:39,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:39,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:39,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:39,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:39,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:39,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:39" (1/1) ... [2023-11-19 04:51:39,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfb20c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:39, skipping insertion in model container [2023-11-19 04:51:39,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:39" (1/1) ... [2023-11-19 04:51:39,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:40,212 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:51:40,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:40,581 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 04:51:40,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13089d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:40, skipping insertion in model container [2023-11-19 04:51:40,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:40,590 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:51:40,592 INFO L158 Benchmark]: Toolchain (without parser) took 827.63ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 95.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:51:40,593 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:51:40,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.10ms. Allocated memory is still 163.6MB. Free memory was 115.3MB in the beginning and 95.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:51:40,596 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.10ms. Allocated memory is still 163.6MB. Free memory was 115.3MB in the beginning and 95.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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_b3d1104f-837f-425a-bb9d-db570d055c46/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 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:43,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:43,724 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:51:43,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:43,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:43,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:43,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:43,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:43,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:43,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:43,787 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:43,787 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:43,788 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:43,789 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:43,790 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:43,790 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:43,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:43,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:43,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:43,794 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:43,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:43,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:43,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:43,800 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:43,801 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:43,801 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:43,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:43,802 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:43,803 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:51:43,803 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:51:43,805 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:43,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:43,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:43,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:43,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:51:43,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:43,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:43,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:43,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:43,810 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:51:43,810 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:51:43,811 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:43,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:43,811 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_b3d1104f-837f-425a-bb9d-db570d055c46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 [2023-11-19 04:51:44,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:44,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:44,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:44,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:44,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:44,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-11-19 04:51:48,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:48,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:48,780 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-11-19 04:51:48,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/2b75e5345/36f72c8570e44a3197892f243ee393ec/FLAGc352f1bde [2023-11-19 04:51:48,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/data/2b75e5345/36f72c8570e44a3197892f243ee393ec [2023-11-19 04:51:48,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:48,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:48,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:48,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:48,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:48,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:48" (1/1) ... [2023-11-19 04:51:48,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183f87e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:48, skipping insertion in model container [2023-11-19 04:51:48,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:48" (1/1) ... [2023-11-19 04:51:48,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:49,360 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:51:49,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:49,901 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:51:49,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:49,927 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:51:50,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:50,009 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:50,027 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:51:50,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:50,168 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:50,177 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:50,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50 WrapperNode [2023-11-19 04:51:50,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:50,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:50,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:50,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:50,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,384 INFO L138 Inliner]: procedures = 181, calls = 341, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1135 [2023-11-19 04:51:50,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:50,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:50,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:50,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:50,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:50,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:50,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:50,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:50,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (1/1) ... [2023-11-19 04:51:50,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:50,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:51:50,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:51:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:51:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:51:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:51:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:51:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:51:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:51:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:51,075 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:51,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:51,084 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 04:51:58,900 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:58,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:58,939 INFO L302 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-19 04:51:58,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:58 BoogieIcfgContainer [2023-11-19 04:51:58,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:58,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:58,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:58,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:58,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:48" (1/3) ... [2023-11-19 04:51:58,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4492649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:58, skipping insertion in model container [2023-11-19 04:51:58,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:50" (2/3) ... [2023-11-19 04:51:58,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4492649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:58, skipping insertion in model container [2023-11-19 04:51:58,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:58" (3/3) ... [2023-11-19 04:51:58,976 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test4-1.i [2023-11-19 04:51:59,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:59,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2023-11-19 04:51:59,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:59,120 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;@40a9d920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:59,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2023-11-19 04:51:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 1262 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1254 states have internal predecessors, (1374), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:51:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:51:59,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:59,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:51:59,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr647ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:51:59,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1204487, now seen corresponding path program 1 times [2023-11-19 04:51:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196615253] [2023-11-19 04:51:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:59,177 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 04:51:59,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:59,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:51:59,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:51:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:59,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:59,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:59,493 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 04:51:59,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:59,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196615253] [2023-11-19 04:51:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196615253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:59,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063086971] [2023-11-19 04:51:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:59,580 INFO L87 Difference]: Start difference. First operand has 1262 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1254 states have internal predecessors, (1374), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 04:52:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:02,671 INFO L93 Difference]: Finished difference Result 1267 states and 1325 transitions. [2023-11-19 04:52:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-19 04:52:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:02,704 INFO L225 Difference]: With dead ends: 1267 [2023-11-19 04:52:02,704 INFO L226 Difference]: Without dead ends: 1263 [2023-11-19 04:52:02,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:52:02,712 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 28 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:02,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1941 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 04:52:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-19 04:52:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1254. [2023-11-19 04:52:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 615 states have (on average 2.1219512195121952) internal successors, (1305), 1246 states have internal predecessors, (1305), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:52:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1317 transitions. [2023-11-19 04:52:02,878 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1317 transitions. Word has length 4 [2023-11-19 04:52:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:02,880 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 1317 transitions. [2023-11-19 04:52:02,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 04:52:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1317 transitions. [2023-11-19 04:52:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:52:02,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:02,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:52:02,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:03,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:03,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:03,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825422, now seen corresponding path program 1 times [2023-11-19 04:52:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:03,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846900647] [2023-11-19 04:52:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:03,089 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 04:52:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:03,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:03,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:03,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:03,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:03,334 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 04:52:03,349 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 04:52:03,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:03,350 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:03,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846900647] [2023-11-19 04:52:03,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846900647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:03,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:52:03,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424037931] [2023-11-19 04:52:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:03,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:03,364 INFO L87 Difference]: Start difference. First operand 1254 states and 1317 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 04:52:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:06,878 INFO L93 Difference]: Finished difference Result 1298 states and 1372 transitions. [2023-11-19 04:52:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 04:52:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:06,889 INFO L225 Difference]: With dead ends: 1298 [2023-11-19 04:52:06,889 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 04:52:06,889 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 04:52:06,892 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1150 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:06,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 674 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 04:52:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 04:52:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1241. [2023-11-19 04:52:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 695 states have (on average 1.9410071942446043) internal successors, (1349), 1233 states have internal predecessors, (1349), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:52:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1361 transitions. [2023-11-19 04:52:06,978 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1361 transitions. Word has length 6 [2023-11-19 04:52:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:06,979 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1361 transitions. [2023-11-19 04:52:06,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 04:52:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1361 transitions. [2023-11-19 04:52:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:52:06,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:06,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:52:06,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:07,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:07,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:07,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825423, now seen corresponding path program 1 times [2023-11-19 04:52:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958590987] [2023-11-19 04:52:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:07,185 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 04:52:07,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:07,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:07,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:07,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:07,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:07,399 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 04:52:07,434 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 04:52:07,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:07,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958590987] [2023-11-19 04:52:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958590987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:52:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717447857] [2023-11-19 04:52:07,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:07,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:07,448 INFO L87 Difference]: Start difference. First operand 1241 states and 1361 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 04:52:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:11,978 INFO L93 Difference]: Finished difference Result 1551 states and 1691 transitions. [2023-11-19 04:52:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 04:52:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:11,989 INFO L225 Difference]: With dead ends: 1551 [2023-11-19 04:52:11,989 INFO L226 Difference]: Without dead ends: 1551 [2023-11-19 04:52:11,990 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 04:52:11,991 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 512 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:11,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1416 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 04:52:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-11-19 04:52:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1401. [2023-11-19 04:52:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 865 states have (on average 1.9179190751445088) internal successors, (1659), 1393 states have internal predecessors, (1659), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:52:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1671 transitions. [2023-11-19 04:52:12,064 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1671 transitions. Word has length 6 [2023-11-19 04:52:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:12,065 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1671 transitions. [2023-11-19 04:52:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 04:52:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1671 transitions. [2023-11-19 04:52:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:52:12,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:12,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:12,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:12,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:12,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1472540985, now seen corresponding path program 1 times [2023-11-19 04:52:12,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:12,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835420333] [2023-11-19 04:52:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:12,270 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 04:52:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:12,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:12,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:12,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:52:12,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:12,473 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 04:52:12,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:12,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835420333] [2023-11-19 04:52:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835420333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306277603] [2023-11-19 04:52:12,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:12,484 INFO L87 Difference]: Start difference. First operand 1401 states and 1671 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:13,758 INFO L93 Difference]: Finished difference Result 2265 states and 2720 transitions. [2023-11-19 04:52:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:52:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:52:13,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:13,773 INFO L225 Difference]: With dead ends: 2265 [2023-11-19 04:52:13,773 INFO L226 Difference]: Without dead ends: 2263 [2023-11-19 04:52:13,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 04:52:13,776 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 780 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:13,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 3260 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 04:52:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-11-19 04:52:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1953. [2023-11-19 04:52:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1417 states have (on average 1.9054340155257588) internal successors, (2700), 1942 states have internal predecessors, (2700), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:52:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2718 transitions. [2023-11-19 04:52:13,851 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2718 transitions. Word has length 7 [2023-11-19 04:52:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:13,852 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 2718 transitions. [2023-11-19 04:52:13,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2718 transitions. [2023-11-19 04:52:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:52:13,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:13,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:13,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:14,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash 759655000, now seen corresponding path program 1 times [2023-11-19 04:52:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641401094] [2023-11-19 04:52:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:14,059 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 04:52:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:14,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:14,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:52:14,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:14,289 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 04:52:14,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:14,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:14,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641401094] [2023-11-19 04:52:14,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641401094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:14,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:14,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068453211] [2023-11-19 04:52:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:14,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:14,296 INFO L87 Difference]: Start difference. First operand 1953 states and 2718 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:14,353 INFO L93 Difference]: Finished difference Result 1893 states and 2632 transitions. [2023-11-19 04:52:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:52:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:14,370 INFO L225 Difference]: With dead ends: 1893 [2023-11-19 04:52:14,371 INFO L226 Difference]: Without dead ends: 1893 [2023-11-19 04:52:14,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 04:52:14,377 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 81 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2202 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 04:52:14,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2202 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:52:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-11-19 04:52:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1893. [2023-11-19 04:52:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1381 states have (on average 1.892831281679942) internal successors, (2614), 1882 states have internal predecessors, (2614), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:52:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2632 transitions. [2023-11-19 04:52:14,437 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2632 transitions. Word has length 12 [2023-11-19 04:52:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:14,438 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 2632 transitions. [2023-11-19 04:52:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2632 transitions. [2023-11-19 04:52:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:52:14,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:14,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:14,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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)] Ended with exit code 0 [2023-11-19 04:52:14,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:14,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash -115989326, now seen corresponding path program 1 times [2023-11-19 04:52:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:14,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150602844] [2023-11-19 04:52:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:14,644 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 04:52:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:14,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:14,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:14,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:14,864 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 04:52:14,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:14,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150602844] [2023-11-19 04:52:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150602844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:14,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881651185] [2023-11-19 04:52:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:14,868 INFO L87 Difference]: Start difference. First operand 1893 states and 2632 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 04:52:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:15,000 INFO L93 Difference]: Finished difference Result 1865 states and 2576 transitions. [2023-11-19 04:52:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:15,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-19 04:52:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:15,014 INFO L225 Difference]: With dead ends: 1865 [2023-11-19 04:52:15,015 INFO L226 Difference]: Without dead ends: 1865 [2023-11-19 04:52:15,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 04:52:15,016 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 62 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3242 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 04:52:15,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3242 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:52:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-11-19 04:52:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1863. [2023-11-19 04:52:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1365 states have (on average 1.8725274725274725) internal successors, (2556), 1852 states have internal predecessors, (2556), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:52:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2574 transitions. [2023-11-19 04:52:15,086 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2574 transitions. Word has length 14 [2023-11-19 04:52:15,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:15,087 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 2574 transitions. [2023-11-19 04:52:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 04:52:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2574 transitions. [2023-11-19 04:52:15,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:52:15,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:15,089 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] [2023-11-19 04:52:15,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:15,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:15,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 662304, now seen corresponding path program 1 times [2023-11-19 04:52:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228071599] [2023-11-19 04:52:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:15,295 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 04:52:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:15,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:15,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:15,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:15,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:15,512 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 04:52:15,642 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 04:52:15,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:15,642 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228071599] [2023-11-19 04:52:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228071599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064350047] [2023-11-19 04:52:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:15,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:15,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:15,646 INFO L87 Difference]: Start difference. First operand 1863 states and 2574 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 04:52:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:19,375 INFO L93 Difference]: Finished difference Result 1916 states and 2577 transitions. [2023-11-19 04:52:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:19,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2023-11-19 04:52:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:19,388 INFO L225 Difference]: With dead ends: 1916 [2023-11-19 04:52:19,388 INFO L226 Difference]: Without dead ends: 1916 [2023-11-19 04:52:19,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 04:52:19,389 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1079 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:19,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1090 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 04:52:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2023-11-19 04:52:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1859. [2023-11-19 04:52:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1365 states have (on average 1.8666666666666667) internal successors, (2548), 1848 states have internal predecessors, (2548), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:52:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2566 transitions. [2023-11-19 04:52:19,449 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2566 transitions. Word has length 28 [2023-11-19 04:52:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2566 transitions. [2023-11-19 04:52:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 04:52:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2566 transitions. [2023-11-19 04:52:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:52:19,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:19,452 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] [2023-11-19 04:52:19,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:19,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:19,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:19,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash 662305, now seen corresponding path program 1 times [2023-11-19 04:52:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859619352] [2023-11-19 04:52:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:19,657 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 04:52:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:19,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:19,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:19,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:52:19,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:19,874 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 04:52:20,143 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 04:52:20,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:20,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:20,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859619352] [2023-11-19 04:52:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859619352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:20,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978343230] [2023-11-19 04:52:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:20,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:20,147 INFO L87 Difference]: Start difference. First operand 1859 states and 2566 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 04:52:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:25,551 INFO L93 Difference]: Finished difference Result 2006 states and 2579 transitions. [2023-11-19 04:52:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2023-11-19 04:52:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:25,564 INFO L225 Difference]: With dead ends: 2006 [2023-11-19 04:52:25,565 INFO L226 Difference]: Without dead ends: 2006 [2023-11-19 04:52:25,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 04:52:25,566 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 443 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:25,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1982 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 04:52:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2023-11-19 04:52:25,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1855. [2023-11-19 04:52:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1365 states have (on average 1.8608058608058609) internal successors, (2540), 1844 states have internal predecessors, (2540), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:52:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2558 transitions. [2023-11-19 04:52:25,647 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2558 transitions. Word has length 28 [2023-11-19 04:52:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:25,647 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 2558 transitions. [2023-11-19 04:52:25,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 04:52:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2558 transitions. [2023-11-19 04:52:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 04:52:25,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:25,650 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] [2023-11-19 04:52:25,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:25,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-19 04:52:25,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash -974826342, now seen corresponding path program 1 times [2023-11-19 04:52:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121836717] [2023-11-19 04:52:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:25,856 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 04:52:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:25,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:25,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d1104f-837f-425a-bb9d-db570d055c46/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 04:52:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:26,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:26,115 INFO L285 TraceCheckSpWp]: Computing forward predicates...