./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:52,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:52,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:58:52,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:52,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:52,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:52,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:52,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:52,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:52,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:52,929 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:52,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:52,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:52,931 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:52,932 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:52,932 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:52,933 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:52,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:52,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:52,935 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:52,936 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:52,937 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:52,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:58:52,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:58:52,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:52,950 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:52,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:52,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:52,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:52,952 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:58:52,952 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:58:52,953 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:58:52,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:52,954 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:58:52,954 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:58:52,955 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:52,956 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:52,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:52,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:52,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:52,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:52,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:52,960 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:52,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:52,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:52,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:52,961 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_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2023-11-12 00:58:53,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:53,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:53,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:53,333 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:53,335 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:53,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2023-11-12 00:58:56,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:57,212 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:57,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2023-11-12 00:58:57,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/672c8004d/ccf24fd256ec4889a51166fb11e3b2cb/FLAG363457c9d [2023-11-12 00:58:57,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/672c8004d/ccf24fd256ec4889a51166fb11e3b2cb [2023-11-12 00:58:57,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:57,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:57,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:57,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:57,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:57,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:57" (1/1) ... [2023-11-12 00:58:57,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d996d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:57, skipping insertion in model container [2023-11-12 00:58:57,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:57" (1/1) ... [2023-11-12 00:58:57,408 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:58,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:58,293 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) [2023-11-12 00:58:58,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d75d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:58, skipping insertion in model container [2023-11-12 00:58:58,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:58,295 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:58:58,297 INFO L158 Benchmark]: Toolchain (without parser) took 1004.95ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 78.9MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:58:58,298 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 106.6MB in the end (delta: 128.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:58:58,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1001.32ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 78.9MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 00:58:58,302 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 106.6MB in the end (delta: 128.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1001.32ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 78.9MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:59:00,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:59:01,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:59:01,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:59:01,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:59:01,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:59:01,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:59:01,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:59:01,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:59:01,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:59:01,105 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:59:01,106 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:59:01,106 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:59:01,108 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:59:01,108 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:59:01,109 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:59:01,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:59:01,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:59:01,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:59:01,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:59:01,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:59:01,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:59:01,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:59:01,116 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:59:01,117 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:59:01,117 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:59:01,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:59:01,118 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:59:01,118 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:59:01,119 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:59:01,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:59:01,120 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:59:01,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:59:01,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:59:01,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:59:01,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:59:01,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:01,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:59:01,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:59:01,123 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:59:01,123 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:59:01,123 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:59:01,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:59:01,124 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_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2023-11-12 00:59:01,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:59:01,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:59:01,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:59:01,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:59:01,561 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:59:01,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2023-11-12 00:59:04,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:59:05,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:59:05,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2023-11-12 00:59:05,280 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/41de1aca4/1db20a17403244baa0a56f905fb2512f/FLAGba6cb138e [2023-11-12 00:59:05,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/data/41de1aca4/1db20a17403244baa0a56f905fb2512f [2023-11-12 00:59:05,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:59:05,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:59:05,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:05,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:59:05,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:59:05,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:05" (1/1) ... [2023-11-12 00:59:05,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d523bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:05, skipping insertion in model container [2023-11-12 00:59:05,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:05" (1/1) ... [2023-11-12 00:59:05,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:06,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:06,540 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:59:06,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:06,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:06,709 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:59:06,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:06,873 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:59:06,882 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:59:06,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06 WrapperNode [2023-11-12 00:59:06,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:06,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:06,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:59:06,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:59:06,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:06,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,111 INFO L138 Inliner]: procedures = 180, calls = 576, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2370 [2023-11-12 00:59:07,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:07,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:59:07,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:59:07,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:59:07,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:59:07,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:59:07,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:59:07,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:59:07,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (1/1) ... [2023-11-12 00:59:07,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:07,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:07,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:59:07,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-12 00:59:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-12 00:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:59:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:59:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:59:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:59:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:59:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:59:07,782 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:59:07,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:59:07,788 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:59:19,607 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:59:19,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:59:19,627 INFO L302 CfgBuilder]: Removed 160 assume(true) statements. [2023-11-12 00:59:19,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:19 BoogieIcfgContainer [2023-11-12 00:59:19,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:59:19,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:59:19,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:59:19,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:59:19,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:59:05" (1/3) ... [2023-11-12 00:59:19,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163bc2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:19, skipping insertion in model container [2023-11-12 00:59:19,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:06" (2/3) ... [2023-11-12 00:59:19,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163bc2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:59:19, skipping insertion in model container [2023-11-12 00:59:19,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:59:19" (3/3) ... [2023-11-12 00:59:19,641 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-2.i [2023-11-12 00:59:19,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:59:19,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2023-11-12 00:59:19,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:59:19,757 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;@1cb690d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:59:19,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2023-11-12 00:59:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 2281 states, 1174 states have (on average 2.1908006814310053) internal successors, (2572), 2267 states have internal predecessors, (2572), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:59:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:59:19,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:19,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:59:19,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-12 00:59:19,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-12 00:59:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:59:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665882856] [2023-11-12 00:59:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:19,795 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 [2023-11-12 00:59:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:59:19,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:59:19,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:59:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:20,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:59:20,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:20,142 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 [2023-11-12 00:59:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:20,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:20,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:59:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665882856] [2023-11-12 00:59:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665882856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:20,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293978382] [2023-11-12 00:59:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:20,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:59:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:20,232 INFO L87 Difference]: Start difference. First operand has 2281 states, 1174 states have (on average 2.1908006814310053) internal successors, (2572), 2267 states have internal predecessors, (2572), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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) [2023-11-12 00:59:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:25,633 INFO L93 Difference]: Finished difference Result 2963 states and 3146 transitions. [2023-11-12 00:59:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:25,635 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 [2023-11-12 00:59:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:25,674 INFO L225 Difference]: With dead ends: 2963 [2023-11-12 00:59:25,674 INFO L226 Difference]: Without dead ends: 2961 [2023-11-12 00:59:25,676 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 [2023-11-12 00:59:25,680 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 2160 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:25,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 1894 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-12 00:59:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-11-12 00:59:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2429. [2023-11-12 00:59:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1346 states have (on average 2.028231797919762) internal successors, (2730), 2413 states have internal predecessors, (2730), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:59:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2762 transitions. [2023-11-12 00:59:25,834 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2762 transitions. Word has length 3 [2023-11-12 00:59:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:25,834 INFO L495 AbstractCegarLoop]: Abstraction has 2429 states and 2762 transitions. [2023-11-12 00:59:25,835 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) [2023-11-12 00:59:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2762 transitions. [2023-11-12 00:59:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:59:25,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:25,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:59:25,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:59:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:59:26,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-12 00:59:26,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-12 00:59:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:59:26,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326287505] [2023-11-12 00:59:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:26,055 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 [2023-11-12 00:59:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:59:26,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:59:26,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:59:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:26,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:59:26,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:26,271 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 [2023-11-12 00:59:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:26,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:26,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:59:26,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326287505] [2023-11-12 00:59:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326287505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:26,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:59:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141895478] [2023-11-12 00:59:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:59:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:26,297 INFO L87 Difference]: Start difference. First operand 2429 states and 2762 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) [2023-11-12 00:59:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:34,131 INFO L93 Difference]: Finished difference Result 3413 states and 3838 transitions. [2023-11-12 00:59:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:34,132 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 [2023-11-12 00:59:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:34,150 INFO L225 Difference]: With dead ends: 3413 [2023-11-12 00:59:34,151 INFO L226 Difference]: Without dead ends: 3413 [2023-11-12 00:59:34,151 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 [2023-11-12 00:59:34,156 INFO L413 NwaCegarLoop]: 1966 mSDtfsCounter, 1068 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:34,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3279 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-12 00:59:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2023-11-12 00:59:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 2890. [2023-11-12 00:59:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 1805 states have (on average 1.9861495844875345) internal successors, (3585), 2871 states have internal predecessors, (3585), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:59:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 3623 transitions. [2023-11-12 00:59:34,248 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 3623 transitions. Word has length 3 [2023-11-12 00:59:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:34,248 INFO L495 AbstractCegarLoop]: Abstraction has 2890 states and 3623 transitions. [2023-11-12 00:59:34,249 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) [2023-11-12 00:59:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 3623 transitions. [2023-11-12 00:59:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:59:34,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:34,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:34,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:59:34,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:59:34,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-12 00:59:34,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-12 00:59:34,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:59:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147112651] [2023-11-12 00:59:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:34,474 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 [2023-11-12 00:59:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:59:34,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:59:34,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bae34dbf-e54d-4278-bc67-f1097415ba2e/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:59:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:34,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:59:34,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:59:34,739 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 [2023-11-12 00:59:34,751 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 [2023-11-12 00:59:34,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:59:34,850 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 [2023-11-12 00:59:34,870 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:59:34,870 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 [2023-11-12 00:59:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:59:34,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:59:34,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:59:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147112651] [2023-11-12 00:59:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147112651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:34,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108536154] [2023-11-12 00:59:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:59:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:59:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:59:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:59:34,895 INFO L87 Difference]: Start difference. First operand 2890 states and 3623 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)