./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:34:43,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:34:43,959 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:34:43,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:34:43,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:34:44,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:34:44,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:34:44,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:34:44,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:34:44,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:34:44,022 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:34:44,022 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:34:44,023 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:34:44,025 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:34:44,025 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:34:44,026 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:34:44,028 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:34:44,029 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:34:44,030 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:34:44,030 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:34:44,031 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:34:44,031 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:34:44,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:34:44,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:34:44,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:34:44,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:34:44,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:34:44,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:34:44,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:34:44,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:34:44,038 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:34:44,038 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:34:44,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:34:44,039 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:34:44,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:34:44,039 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:34:44,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:34:44,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:34:44,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:34:44,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:44,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:34:44,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:34:44,042 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:34:44,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:34:44,043 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:34:44,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:34:44,043 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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2023-11-06 20:34:44,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:34:44,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:34:44,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:34:44,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:34:44,398 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:34:44,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-11-06 20:34:47,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:34:47,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:34:47,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-11-06 20:34:48,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/b59e968cf/160ab34188cb4f148864d42dcf00ebde/FLAG23bb4a64a [2023-11-06 20:34:48,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/b59e968cf/160ab34188cb4f148864d42dcf00ebde [2023-11-06 20:34:48,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:34:48,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:34:48,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:48,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:34:48,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:34:48,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:48" (1/1) ... [2023-11-06 20:34:48,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1552f38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:48, skipping insertion in model container [2023-11-06 20:34:48,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:48" (1/1) ... [2023-11-06 20:34:48,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:34:48,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:48,906 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 20:34:48,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21294257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:48, skipping insertion in model container [2023-11-06 20:34:48,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:48,908 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:34:48,911 INFO L158 Benchmark]: Toolchain (without parser) took 878.03ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 63.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:34:48,912 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:34:48,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 875.31ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 63.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:34:48,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 875.31ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 63.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:34:51,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:34:51,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:34:51,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:34:51,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:34:51,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:34:51,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:34:51,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:34:51,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:34:51,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:34:51,816 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:34:51,816 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:34:51,817 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:34:51,818 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:34:51,819 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:34:51,819 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:34:51,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:34:51,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:34:51,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:34:51,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:34:51,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:34:51,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:34:51,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:34:51,825 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:34:51,825 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:34:51,826 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:34:51,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:34:51,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:34:51,827 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:34:51,827 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:34:51,829 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:34:51,829 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:34:51,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:34:51,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:34:51,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:34:51,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:34:51,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:51,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:34:51,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:34:51,833 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:34:51,833 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:34:51,834 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:34:51,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:34:51,834 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_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2023-11-06 20:34:52,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:34:52,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:34:52,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:34:52,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:34:52,254 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:34:52,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-11-06 20:34:55,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:34:56,212 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:34:56,212 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-11-06 20:34:56,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/018a5f446/69228ae3f7ba403dacb51106f25d1f17/FLAGcf603b491 [2023-11-06 20:34:56,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/data/018a5f446/69228ae3f7ba403dacb51106f25d1f17 [2023-11-06 20:34:56,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:34:56,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:34:56,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:56,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:34:56,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:34:56,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:56" (1/1) ... [2023-11-06 20:34:56,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443f4dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:56, skipping insertion in model container [2023-11-06 20:34:56,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:34:56" (1/1) ... [2023-11-06 20:34:56,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:34:57,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:57,269 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:34:57,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:34:57,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:57,431 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:34:57,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:34:57,575 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:34:57,584 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:34:57,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57 WrapperNode [2023-11-06 20:34:57,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:34:57,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:57,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:34:57,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:34:57,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,702 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-06 20:34:57,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:34:57,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:34:57,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:34:57,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:34:57,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:34:57,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:34:57,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:34:57,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:34:57,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (1/1) ... [2023-11-06 20:34:57,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:34:57,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:34:57,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:34:57,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:34:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 20:34:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 20:34:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 20:34:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:34:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 20:34:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 20:34:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 20:34:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 20:34:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-06 20:34:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-06 20:34:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:34:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:34:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:34:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:34:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 20:34:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:34:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:34:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:34:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:34:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:34:58,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:34:58,288 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:34:58,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:34:58,347 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:35:04,846 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:35:04,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:35:04,870 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-06 20:35:04,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:35:04 BoogieIcfgContainer [2023-11-06 20:35:04,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:35:04,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:35:04,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:35:04,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:35:04,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:34:56" (1/3) ... [2023-11-06 20:35:04,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39911938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:35:04, skipping insertion in model container [2023-11-06 20:35:04,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:34:57" (2/3) ... [2023-11-06 20:35:04,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39911938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:35:04, skipping insertion in model container [2023-11-06 20:35:04,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:35:04" (3/3) ... [2023-11-06 20:35:04,888 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2023-11-06 20:35:04,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:35:04,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 640 error locations. [2023-11-06 20:35:05,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:35:05,011 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;@675c6ae1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:35:05,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 640 error locations. [2023-11-06 20:35:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 1309 states, 645 states have (on average 2.2310077519379843) internal successors, (1439), 1299 states have internal predecessors, (1439), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 20:35:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:35:05,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:05,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:35:05,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-06 20:35:05,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 141073, now seen corresponding path program 1 times [2023-11-06 20:35:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:35:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804323402] [2023-11-06 20:35:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:05,056 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 20:35:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:35:05,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:05,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:05,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:35:05,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:35:05,332 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 20:35:05,344 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 20:35:05,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:35:05,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:35:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804323402] [2023-11-06 20:35:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804323402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:05,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:05,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344818600] [2023-11-06 20:35:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:35:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:35:05,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:35:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:05,390 INFO L87 Difference]: Start difference. First operand has 1309 states, 645 states have (on average 2.2310077519379843) internal successors, (1439), 1299 states have internal predecessors, (1439), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:35:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:08,367 INFO L93 Difference]: Finished difference Result 1493 states and 1599 transitions. [2023-11-06 20:35:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:35:08,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 20:35:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:08,394 INFO L225 Difference]: With dead ends: 1493 [2023-11-06 20:35:08,394 INFO L226 Difference]: Without dead ends: 1491 [2023-11-06 20:35:08,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:08,399 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1170 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1068 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 20:35:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-11-06 20:35:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1299. [2023-11-06 20:35:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 650 states have (on average 2.0876923076923077) internal successors, (1357), 1288 states have internal predecessors, (1357), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-06 20:35:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1401 transitions. [2023-11-06 20:35:08,515 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1401 transitions. Word has length 3 [2023-11-06 20:35:08,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:08,515 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1401 transitions. [2023-11-06 20:35:08,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:35:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1401 transitions. [2023-11-06 20:35:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:35:08,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:08,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:35:08,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:08,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:08,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-06 20:35:08,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 141074, now seen corresponding path program 1 times [2023-11-06 20:35:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:35:08,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014161384] [2023-11-06 20:35:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:08,730 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 20:35:08,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:35:08,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:08,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:08,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:35:08,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:35:08,881 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 20:35:08,893 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 20:35:08,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:35:08,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:35:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014161384] [2023-11-06 20:35:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014161384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:08,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:08,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:35:08,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248876688] [2023-11-06 20:35:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:35:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:35:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:35:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:08,897 INFO L87 Difference]: Start difference. First operand 1299 states and 1401 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:35:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:35:13,503 INFO L93 Difference]: Finished difference Result 1897 states and 2041 transitions. [2023-11-06 20:35:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:35:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 20:35:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:35:13,515 INFO L225 Difference]: With dead ends: 1897 [2023-11-06 20:35:13,516 INFO L226 Difference]: Without dead ends: 1897 [2023-11-06 20:35:13,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:35:13,518 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 637 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:35:13,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1860 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 20:35:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2023-11-06 20:35:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1508. [2023-11-06 20:35:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 859 states have (on average 2.0733410942956927) internal successors, (1781), 1496 states have internal predecessors, (1781), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 20:35:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1827 transitions. [2023-11-06 20:35:13,573 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1827 transitions. Word has length 3 [2023-11-06 20:35:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:35:13,573 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 1827 transitions. [2023-11-06 20:35:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:35:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1827 transitions. [2023-11-06 20:35:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 20:35:13,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:35:13,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:35:13,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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)] Ended with exit code 0 [2023-11-06 20:35:13,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:13,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-06 20:35:13,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:35:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1437667611, now seen corresponding path program 1 times [2023-11-06 20:35:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:35:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069881295] [2023-11-06 20:35:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:35:13,786 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 20:35:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:35:13,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:13,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c2c65d-ce09-4500-b537-7d3bf49dc1cd/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 20:35:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:35:13,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 20:35:13,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:35:13,997 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 20:35:14,008 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 20:35:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:35:14,105 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 20:35:14,130 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 20:35:14,131 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 20:35:14,158 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 20:35:14,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:35:14,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:35:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069881295] [2023-11-06 20:35:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069881295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:35:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:35:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:35:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261741572] [2023-11-06 20:35:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:35:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:35:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:35:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:35:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:35:14,163 INFO L87 Difference]: Start difference. First operand 1508 states and 1827 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)