./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57e88052da463d5b7254d94e89c581ee420b273cd207f71cae5120687b870089 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:18,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:18,848 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:31:18,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:18,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:18,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:18,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:18,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:18,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:18,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:18,881 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:18,881 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:18,882 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:18,883 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:31:18,883 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:18,884 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:18,884 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:31:18,885 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:31:18,885 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:18,886 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:31:18,887 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:31:18,890 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:31:18,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:31:18,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:31:18,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:18,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:18,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:18,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:18,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:18,894 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:31:18,895 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:31:18,896 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:31:18,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:18,897 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:31:18,897 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:31:18,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:18,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:18,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:18,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:18,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:18,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:18,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:18,900 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:31:18,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:31:18,901 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:18,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:18,902 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_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57e88052da463d5b7254d94e89c581ee420b273cd207f71cae5120687b870089 [2023-11-06 20:31:19,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:19,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:19,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:19,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:19,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:19,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2023-11-06 20:31:22,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:22,736 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:22,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2023-11-06 20:31:22,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/233fc56ef/ed506e5e8a95415d98d598b686cdf472/FLAG25cf11314 [2023-11-06 20:31:22,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/233fc56ef/ed506e5e8a95415d98d598b686cdf472 [2023-11-06 20:31:22,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:22,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:22,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:22,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:22,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:22,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:22" (1/1) ... [2023-11-06 20:31:22,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efb4bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:22, skipping insertion in model container [2023-11-06 20:31:22,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:22" (1/1) ... [2023-11-06 20:31:22,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:23,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:23,378 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) [2023-11-06 20:31:23,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@562ac24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:23, skipping insertion in model container [2023-11-06 20:31:23,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:23,380 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:31:23,382 INFO L158 Benchmark]: Toolchain (without parser) took 603.73ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 149.4MB in the end (delta: 85.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 20:31:23,383 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:31:23,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.09ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 149.4MB in the end (delta: 85.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 20:31:23,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.09ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 149.4MB in the end (delta: 85.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57e88052da463d5b7254d94e89c581ee420b273cd207f71cae5120687b870089 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:25,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:25,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:31:25,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:25,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:25,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:25,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:25,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:25,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:25,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:25,983 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:25,983 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:25,984 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:25,988 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:25,989 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:25,989 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:25,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:31:25,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:31:25,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:25,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:25,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:25,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:25,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:25,994 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:31:25,994 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:31:25,994 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:31:25,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:25,995 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:31:25,996 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:31:25,996 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:31:25,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:31:25,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:25,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:25,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:25,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:31:25,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:26,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:26,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:26,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:26,002 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:31:26,002 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:31:26,002 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:26,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:26,003 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_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57e88052da463d5b7254d94e89c581ee420b273cd207f71cae5120687b870089 [2023-11-06 20:31:26,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:26,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:26,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:26,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:26,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:26,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2023-11-06 20:31:29,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:29,885 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:29,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/sv-benchmarks/c/ldv-memsafety/memleaks_test14.i [2023-11-06 20:31:29,923 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/15a4c1f05/d4f21b6b04994e3180c37fc3c970231e/FLAG89a41efb2 [2023-11-06 20:31:29,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/data/15a4c1f05/d4f21b6b04994e3180c37fc3c970231e [2023-11-06 20:31:29,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:29,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:29,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:29,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:29,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:29,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:29" (1/1) ... [2023-11-06 20:31:29,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be3f1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:29, skipping insertion in model container [2023-11-06 20:31:29,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:29" (1/1) ... [2023-11-06 20:31:30,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:30,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:30,601 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:31:30,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:30,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:30,725 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:31:30,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:30,860 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:31:30,868 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:31:30,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30 WrapperNode [2023-11-06 20:31:30,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:30,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:30,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:31:30,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:31:30,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,927 INFO L138 Inliner]: procedures = 168, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 67 [2023-11-06 20:31:30,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:30,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:31:30,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:31:30,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:31:30,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:31:30,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:31:30,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:31:30,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:31:30,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (1/1) ... [2023-11-06 20:31:30,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:31,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:31:31,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:31:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-06 20:31:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-06 20:31:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 20:31:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 20:31:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-11-06 20:31:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-11-06 20:31:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:31:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:31:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:31:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:31:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 20:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-06 20:31:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-06 20:31:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:31:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:31:31,251 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:31:31,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:31:31,721 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:31:31,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:31:31,730 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 20:31:31,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:31 BoogieIcfgContainer [2023-11-06 20:31:31,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:31:31,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:31:31,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:31:31,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:31:31,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:31:29" (1/3) ... [2023-11-06 20:31:31,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f5f8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:31, skipping insertion in model container [2023-11-06 20:31:31,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:30" (2/3) ... [2023-11-06 20:31:31,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f5f8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:31:31, skipping insertion in model container [2023-11-06 20:31:31,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:31:31" (3/3) ... [2023-11-06 20:31:31,743 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14.i [2023-11-06 20:31:31,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:31:31,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-06 20:31:31,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:31:31,839 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;@51abb2a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:31:31,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-06 20:31:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 70 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:31:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:31:31,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:31,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:31,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:31,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash -781473750, now seen corresponding path program 1 times [2023-11-06 20:31:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506815556] [2023-11-06 20:31:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:31,887 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 [2023-11-06 20:31:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:31,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:31,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:32,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 20:31:32,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:32,228 INFO L351 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 [2023-11-06 20:31:32,289 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-06 20:31:32,350 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 20:31:32,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 20:31:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:32,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:32,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506815556] [2023-11-06 20:31:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506815556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:31:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787831223] [2023-11-06 20:31:32,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:31:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:31:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-11-06 20:31:32,514 INFO L87 Difference]: Start difference. First operand has 78 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 70 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:33,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:33,113 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2023-11-06 20:31:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:31:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-06 20:31:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:33,126 INFO L225 Difference]: With dead ends: 79 [2023-11-06 20:31:33,126 INFO L226 Difference]: Without dead ends: 77 [2023-11-06 20:31:33,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2023-11-06 20:31:33,131 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:33,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 124 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 87 Unchecked, 0.5s Time] [2023-11-06 20:31:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-06 20:31:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-06 20:31:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 40 states have (on average 1.725) internal successors, (69), 67 states have internal predecessors, (69), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:31:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2023-11-06 20:31:33,172 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 12 [2023-11-06 20:31:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:33,173 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2023-11-06 20:31:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2023-11-06 20:31:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:31:33,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:33,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:33,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:33,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:33,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -781473749, now seen corresponding path program 1 times [2023-11-06 20:31:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842488883] [2023-11-06 20:31:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:33,398 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 [2023-11-06 20:31:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:33,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:33,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:33,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 20:31:33,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:33,523 INFO L351 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 [2023-11-06 20:31:33,530 INFO L351 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 [2023-11-06 20:31:33,595 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-06 20:31:33,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:33,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 20:31:33,653 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 20:31:33,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 20:31:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:33,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:33,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842488883] [2023-11-06 20:31:33,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842488883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:33,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:33,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 20:31:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101759172] [2023-11-06 20:31:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:33,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 20:31:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 20:31:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-11-06 20:31:33,758 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:34,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:34,290 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2023-11-06 20:31:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 20:31:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-06 20:31:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:34,295 INFO L225 Difference]: With dead ends: 80 [2023-11-06 20:31:34,295 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 20:31:34,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2023-11-06 20:31:34,297 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 47 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:34,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 147 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 203 Invalid, 0 Unknown, 92 Unchecked, 0.5s Time] [2023-11-06 20:31:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 20:31:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2023-11-06 20:31:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 40 states have (on average 1.7) internal successors, (68), 66 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:31:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-11-06 20:31:34,319 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 12 [2023-11-06 20:31:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:34,320 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-11-06 20:31:34,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-11-06 20:31:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:31:34,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:34,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:34,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:34,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:34,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:34,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1410681567, now seen corresponding path program 1 times [2023-11-06 20:31:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:34,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537111033] [2023-11-06 20:31:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:34,537 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 [2023-11-06 20:31:34,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:34,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:34,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:34,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:31:34,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:34,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:34,661 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:34,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537111033] [2023-11-06 20:31:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537111033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:34,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:34,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:31:34,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453760243] [2023-11-06 20:31:34,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:34,676 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:34,721 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2023-11-06 20:31:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:31:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 20:31:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:34,726 INFO L225 Difference]: With dead ends: 80 [2023-11-06 20:31:34,726 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 20:31:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:34,730 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 291 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:31:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 20:31:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-11-06 20:31:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 69 states have internal predecessors, (71), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 20:31:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-11-06 20:31:34,755 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 11 [2023-11-06 20:31:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:34,756 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-11-06 20:31:34,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-11-06 20:31:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:31:34,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:34,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:34,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:34,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:34,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash -523177886, now seen corresponding path program 1 times [2023-11-06 20:31:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737972851] [2023-11-06 20:31:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:34,978 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 [2023-11-06 20:31:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:34,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:34,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:35,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 20:31:35,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:35,071 INFO L351 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 [2023-11-06 20:31:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:35,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:35,152 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737972851] [2023-11-06 20:31:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737972851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:35,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:31:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749520626] [2023-11-06 20:31:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:35,156 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:35,542 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2023-11-06 20:31:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:31:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 20:31:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:35,544 INFO L225 Difference]: With dead ends: 105 [2023-11-06 20:31:35,544 INFO L226 Difference]: Without dead ends: 105 [2023-11-06 20:31:35,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:31:35,545 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 77 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:35,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 90 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 20:31:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-06 20:31:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2023-11-06 20:31:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 71 states have internal predecessors, (74), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 20:31:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2023-11-06 20:31:35,554 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 11 [2023-11-06 20:31:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:35,554 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2023-11-06 20:31:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2023-11-06 20:31:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:31:35,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:35,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:35,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:35,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:35,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:35,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash -523177885, now seen corresponding path program 1 times [2023-11-06 20:31:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:35,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216856965] [2023-11-06 20:31:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:35,769 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 [2023-11-06 20:31:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:35,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:35,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 20:31:35,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:35,859 INFO L351 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 [2023-11-06 20:31:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:35,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:35,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216856965] [2023-11-06 20:31:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216856965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:31:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035657122] [2023-11-06 20:31:35,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:35,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:31:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:35,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:31:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:31:35,951 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:36,462 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2023-11-06 20:31:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:31:36,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 20:31:36,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:36,466 INFO L225 Difference]: With dead ends: 100 [2023-11-06 20:31:36,466 INFO L226 Difference]: Without dead ends: 100 [2023-11-06 20:31:36,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:31:36,467 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 75 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:36,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 103 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 20:31:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-06 20:31:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2023-11-06 20:31:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 71 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 20:31:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-11-06 20:31:36,476 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 11 [2023-11-06 20:31:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:36,476 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-11-06 20:31:36,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-11-06 20:31:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:31:36,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:36,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:36,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 20:31:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:36,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:36,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2133290457, now seen corresponding path program 1 times [2023-11-06 20:31:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151920709] [2023-11-06 20:31:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:36,680 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 [2023-11-06 20:31:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:36,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:36,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:36,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 20:31:36,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:38,812 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3|) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|)) is different from true [2023-11-06 20:31:38,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 20:31:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:38,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:38,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:38,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151920709] [2023-11-06 20:31:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151920709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 20:31:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463812967] [2023-11-06 20:31:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 20:31:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:38,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 20:31:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2023-11-06 20:31:38,967 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:39,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:39,480 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2023-11-06 20:31:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 20:31:39,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-06 20:31:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:39,484 INFO L225 Difference]: With dead ends: 81 [2023-11-06 20:31:39,484 INFO L226 Difference]: Without dead ends: 81 [2023-11-06 20:31:39,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-06 20:31:39,486 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 29 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:39,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 307 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 104 Unchecked, 0.4s Time] [2023-11-06 20:31:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-06 20:31:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2023-11-06 20:31:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.6) internal successors, (72), 70 states have internal predecessors, (72), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 20:31:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-11-06 20:31:39,495 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 15 [2023-11-06 20:31:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:39,495 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-11-06 20:31:39,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-11-06 20:31:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:31:39,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:39,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:39,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:39,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:39,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:39,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2133290458, now seen corresponding path program 1 times [2023-11-06 20:31:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231617683] [2023-11-06 20:31:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:39,717 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 [2023-11-06 20:31:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:39,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:39,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:39,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 20:31:39,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:39,855 INFO L351 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 [2023-11-06 20:31:39,870 INFO L351 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 [2023-11-06 20:31:39,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 20:31:39,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 20:31:40,001 WARN L861 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)) (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|))) (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|)))) is different from true [2023-11-06 20:31:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:31:40,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 20:31:40,106 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 20:31:40,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 20:31:40,456 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 20:31:40,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-11-06 20:31:40,466 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 20:31:40,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 20:31:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:40,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:40,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231617683] [2023-11-06 20:31:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231617683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:40,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 20:31:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880232636] [2023-11-06 20:31:40,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:40,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 20:31:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 20:31:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2023-11-06 20:31:40,590 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:42,045 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2023-11-06 20:31:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 20:31:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-06 20:31:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:42,047 INFO L225 Difference]: With dead ends: 80 [2023-11-06 20:31:42,047 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 20:31:42,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=190, Unknown=1, NotChecked=28, Total=272 [2023-11-06 20:31:42,048 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 36 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:42,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 346 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 299 Invalid, 0 Unknown, 95 Unchecked, 1.1s Time] [2023-11-06 20:31:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 20:31:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2023-11-06 20:31:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 69 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 20:31:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-11-06 20:31:42,054 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 15 [2023-11-06 20:31:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:42,054 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-11-06 20:31:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-11-06 20:31:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:31:42,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:42,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:42,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:42,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:42,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:42,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -262774844, now seen corresponding path program 1 times [2023-11-06 20:31:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723551359] [2023-11-06 20:31:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:42,268 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 [2023-11-06 20:31:42,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:42,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:42,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:42,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 20:31:42,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:42,365 INFO L351 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 [2023-11-06 20:31:42,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 20:31:42,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 20:31:42,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 20:31:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:42,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:42,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723551359] [2023-11-06 20:31:42,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723551359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:42,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:42,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:31:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535678804] [2023-11-06 20:31:42,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:31:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:31:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:31:42,648 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:31:43,665 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2023-11-06 20:31:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 20:31:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-06 20:31:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:31:43,667 INFO L225 Difference]: With dead ends: 106 [2023-11-06 20:31:43,668 INFO L226 Difference]: Without dead ends: 106 [2023-11-06 20:31:43,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 20:31:43,669 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 20:31:43,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 215 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 20:31:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-06 20:31:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2023-11-06 20:31:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-06 20:31:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2023-11-06 20:31:43,676 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 13 [2023-11-06 20:31:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:31:43,677 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2023-11-06 20:31:43,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2023-11-06 20:31:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:31:43,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:31:43,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:31:43,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:43,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2023-11-06 20:31:43,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:31:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -262774845, now seen corresponding path program 1 times [2023-11-06 20:31:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:31:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376277830] [2023-11-06 20:31:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:31:43,901 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 [2023-11-06 20:31:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:31:43,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:31:43,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d4639cc-bde0-4097-937e-791c028a0956/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:31:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:31:43,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 20:31:43,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:31:43,987 INFO L351 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 [2023-11-06 20:31:44,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 20:31:44,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 20:31:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:31:44,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:31:44,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:31:44,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376277830] [2023-11-06 20:31:44,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376277830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:31:44,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:31:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:31:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114656670] [2023-11-06 20:31:44,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:31:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 20:31:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:31:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 20:31:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:31:44,183 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 20:31:46,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 20:31:48,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 20:31:50,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 20:31:52,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 20:31:54,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]