./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.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_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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_62238332-9968-4d54-99fb-d4a7076f9fb5/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:29,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:29,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:00:29,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:29,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:29,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:29,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:29,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:29,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:29,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:29,783 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:29,783 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:29,785 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:29,787 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:00:29,788 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:29,789 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:29,790 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:00:29,791 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:00:29,795 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:29,796 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:00:29,796 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:00:29,797 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:00:29,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:00:29,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:00:29,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:29,800 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:29,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:29,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:29,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:29,802 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:00:29,804 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:00:29,804 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:00:29,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:29,805 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:00:29,806 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:00:29,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:29,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:29,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:29,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:29,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:29,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:29,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:29,809 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:00:29,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:00:29,810 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:29,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:29,811 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_62238332-9968-4d54-99fb-d4a7076f9fb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2023-11-12 01:00:30,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:30,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:30,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:30,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:30,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:30,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-12 01:00:33,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:00:33,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:00:33,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-12 01:00:33,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/23b2ad6b0/30ddd47705cf4c1cbc7cb8277a84cb45/FLAG300149b4b [2023-11-12 01:00:33,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/23b2ad6b0/30ddd47705cf4c1cbc7cb8277a84cb45 [2023-11-12 01:00:33,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:00:33,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:00:33,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:33,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:00:33,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:00:33,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:33" (1/1) ... [2023-11-12 01:00:33,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba60768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:33, skipping insertion in model container [2023-11-12 01:00:33,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:33" (1/1) ... [2023-11-12 01:00:33,902 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:34,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:34,810 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 01:00:34,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cb61986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:34, skipping insertion in model container [2023-11-12 01:00:34,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:34,812 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 01:00:34,814 INFO L158 Benchmark]: Toolchain (without parser) took 998.02ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 109.0MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 01:00:34,814 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:00:34,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 995.18ms. Allocated memory is still 180.4MB. Free memory was 131.7MB in the beginning and 109.0MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 01:00:34,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 995.18ms. Allocated memory is still 180.4MB. Free memory was 131.7MB in the beginning and 109.0MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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_62238332-9968-4d54-99fb-d4a7076f9fb5/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:37,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:37,296 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 01:00:37,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:37,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:37,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:37,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:37,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:37,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:37,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:37,356 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:37,357 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:37,357 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:37,358 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:37,359 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:37,359 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:37,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:00:37,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:00:37,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:37,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:37,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:37,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:37,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:37,365 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:00:37,365 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:00:37,366 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:00:37,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:37,367 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:00:37,368 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 01:00:37,368 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 01:00:37,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:00:37,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:37,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:37,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:37,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 01:00:37,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:37,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:37,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:37,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:37,373 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 01:00:37,374 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 01:00:37,374 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:37,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:37,375 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_62238332-9968-4d54-99fb-d4a7076f9fb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2023-11-12 01:00:37,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:37,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:37,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:37,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:37,843 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:37,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-12 01:00:41,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:00:41,447 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:00:41,447 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-12 01:00:41,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/cccb069f8/893e1d8c4ba4495999259c4513937715/FLAGcba108b11 [2023-11-12 01:00:41,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/data/cccb069f8/893e1d8c4ba4495999259c4513937715 [2023-11-12 01:00:41,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:00:41,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:00:41,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:41,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:00:41,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:00:41,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33072629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41, skipping insertion in model container [2023-11-12 01:00:41,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:42,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:42,695 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 01:00:42,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:42,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:42,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:00:43,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:43,108 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:00:43,118 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:00:43,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43 WrapperNode [2023-11-12 01:00:43,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:43,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:43,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:00:43,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:00:43,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,285 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1213 [2023-11-12 01:00:43,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:43,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:00:43,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:00:43,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:00:43,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:00:43,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:00:43,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:00:43,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:00:43,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (1/1) ... [2023-11-12 01:00:43,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:43,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:43,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:00:43,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:00:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 01:00:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 01:00:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 01:00:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 01:00:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:00:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 01:00:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:00:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:00:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 01:00:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 01:00:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-12 01:00:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-12 01:00:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:00:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:00:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:00:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:00:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-12 01:00:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-12 01:00:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:00:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-12 01:00:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-12 01:00:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:00:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:00:43,873 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:43,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:50,007 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:50,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:50,024 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-12 01:00:50,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:50 BoogieIcfgContainer [2023-11-12 01:00:50,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:50,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:50,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:50,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:50,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:00:41" (1/3) ... [2023-11-12 01:00:50,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de238cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:50, skipping insertion in model container [2023-11-12 01:00:50,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:43" (2/3) ... [2023-11-12 01:00:50,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de238cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:50, skipping insertion in model container [2023-11-12 01:00:50,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:50" (3/3) ... [2023-11-12 01:00:50,038 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2023-11-12 01:00:50,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:50,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 631 error locations. [2023-11-12 01:00:50,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:50,137 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;@2038815b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:50,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 631 error locations. [2023-11-12 01:00:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 01:00:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:00:50,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:50,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:00:50,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:00:50,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:50,161 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2023-11-12 01:00:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:00:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302790410] [2023-11-12 01:00:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:50,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:00:50,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:00:50,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:50,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:50,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:00:50,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:50,576 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 01:00:50,592 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 01:00:50,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:50,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:00:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302790410] [2023-11-12 01:00:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302790410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:50,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496699457] [2023-11-12 01:00:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:50,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:00:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:50,654 INFO L87 Difference]: Start difference. First operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) 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 01:00:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:53,891 INFO L93 Difference]: Finished difference Result 1552 states and 1644 transitions. [2023-11-12 01:00:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:53,894 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 01:00:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:53,918 INFO L225 Difference]: With dead ends: 1552 [2023-11-12 01:00:53,918 INFO L226 Difference]: Without dead ends: 1550 [2023-11-12 01:00:53,920 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 01:00:53,924 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 915 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:53,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1273 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 01:00:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-11-12 01:00:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1312. [2023-11-12 01:00:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 671 states have (on average 2.0864381520119224) internal successors, (1400), 1292 states have internal predecessors, (1400), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 01:00:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1434 transitions. [2023-11-12 01:00:54,070 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1434 transitions. Word has length 3 [2023-11-12 01:00:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:54,071 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1434 transitions. [2023-11-12 01:00:54,071 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 01:00:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1434 transitions. [2023-11-12 01:00:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:00:54,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:54,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:00:54,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:54,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:00:54,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2023-11-12 01:00:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:00:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117648728] [2023-11-12 01:00:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:54,292 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 01:00:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:00:54,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:54,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:00:54,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:54,459 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 01:00:54,476 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 01:00:54,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:54,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:00:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117648728] [2023-11-12 01:00:54,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117648728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:54,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:54,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201740543] [2023-11-12 01:00:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:00:54,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:54,481 INFO L87 Difference]: Start difference. First operand 1312 states and 1434 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 01:00:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:59,265 INFO L93 Difference]: Finished difference Result 1908 states and 2079 transitions. [2023-11-12 01:00:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:59,268 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 01:00:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:59,278 INFO L225 Difference]: With dead ends: 1908 [2023-11-12 01:00:59,279 INFO L226 Difference]: Without dead ends: 1908 [2023-11-12 01:00:59,279 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 01:00:59,281 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 629 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1771 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-12 01:00:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2023-11-12 01:00:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1521. [2023-11-12 01:00:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 879 states have (on average 2.0671217292377704) internal successors, (1817), 1499 states have internal predecessors, (1817), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:00:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1855 transitions. [2023-11-12 01:00:59,329 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1855 transitions. Word has length 3 [2023-11-12 01:00:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:59,329 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1855 transitions. [2023-11-12 01:00:59,330 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 01:00:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1855 transitions. [2023-11-12 01:00:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:00:59,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:59,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:59,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:59,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:59,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:00:59,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1307350193, now seen corresponding path program 1 times [2023-11-12 01:00:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:00:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947168767] [2023-11-12 01:00:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:59,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:00:59,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:00:59,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:59,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:00:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:59,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:00:59,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:59,771 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 01:00:59,778 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 01:00:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:00:59,874 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 01:00:59,897 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 01:00:59,897 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 01:00:59,934 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 01:00:59,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:59,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:00:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947168767] [2023-11-12 01:00:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947168767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:59,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490105594] [2023-11-12 01:00:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:00:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:59,938 INFO L87 Difference]: Start difference. First operand 1521 states and 1855 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 01:01:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:07,952 INFO L93 Difference]: Finished difference Result 2599 states and 3013 transitions. [2023-11-12 01:01:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:01:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-11-12 01:01:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:07,969 INFO L225 Difference]: With dead ends: 2599 [2023-11-12 01:01:07,969 INFO L226 Difference]: Without dead ends: 2599 [2023-11-12 01:01:07,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:07,977 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1121 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:07,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1826 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-12 01:01:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2023-11-12 01:01:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1670. [2023-11-12 01:01:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1028 states have (on average 2.046692607003891) internal successors, (2104), 1648 states have internal predecessors, (2104), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:01:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2142 transitions. [2023-11-12 01:01:08,061 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2142 transitions. Word has length 8 [2023-11-12 01:01:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2142 transitions. [2023-11-12 01:01:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 01:01:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2142 transitions. [2023-11-12 01:01:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:01:08,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:08,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:08,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:08,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:01:08,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1873150296, now seen corresponding path program 1 times [2023-11-12 01:01:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:01:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787008565] [2023-11-12 01:01:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:08,282 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 01:01:08,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:01:08,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:08,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (5)] Waiting until timeout for monitored process [2023-11-12 01:01:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:08,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:01:08,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:08,455 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 01:01:08,488 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 01:01:08,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:08,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:01:08,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787008565] [2023-11-12 01:01:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787008565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:01:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115160801] [2023-11-12 01:01:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:01:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:08,491 INFO L87 Difference]: Start difference. First operand 1670 states and 2142 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 01:01:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:13,680 INFO L93 Difference]: Finished difference Result 2849 states and 3555 transitions. [2023-11-12 01:01:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:13,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-12 01:01:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:13,698 INFO L225 Difference]: With dead ends: 2849 [2023-11-12 01:01:13,698 INFO L226 Difference]: Without dead ends: 2849 [2023-11-12 01:01:13,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:13,700 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 2355 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 2620 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-12 01:01:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2023-11-12 01:01:13,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1625. [2023-11-12 01:01:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1028 states have (on average 1.9892996108949417) internal successors, (2045), 1603 states have internal predecessors, (2045), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:01:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2083 transitions. [2023-11-12 01:01:13,772 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2083 transitions. Word has length 9 [2023-11-12 01:01:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:13,772 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2083 transitions. [2023-11-12 01:01:13,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 01:01:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2083 transitions. [2023-11-12 01:01:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:01:13,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:13,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:13,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (5)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:13,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:13,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:01:13,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1873150295, now seen corresponding path program 1 times [2023-11-12 01:01:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:01:13,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686193434] [2023-11-12 01:01:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:13,987 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 01:01:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:01:13,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:13,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (6)] Waiting until timeout for monitored process [2023-11-12 01:01:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:14,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:01:14,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:14,177 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 01:01:14,233 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 01:01:14,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:14,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:01:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686193434] [2023-11-12 01:01:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686193434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:14,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:01:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28320317] [2023-11-12 01:01:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:14,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:01:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:14,245 INFO L87 Difference]: Start difference. First operand 1625 states and 2083 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 01:01:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:19,983 INFO L93 Difference]: Finished difference Result 2471 states and 3140 transitions. [2023-11-12 01:01:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:01:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-12 01:01:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:19,996 INFO L225 Difference]: With dead ends: 2471 [2023-11-12 01:01:19,996 INFO L226 Difference]: Without dead ends: 2471 [2023-11-12 01:01:19,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:19,997 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1598 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2759 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-12 01:01:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-11-12 01:01:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1615. [2023-11-12 01:01:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1028 states have (on average 1.965953307392996) internal successors, (2021), 1593 states have internal predecessors, (2021), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 01:01:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2059 transitions. [2023-11-12 01:01:20,047 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2059 transitions. Word has length 9 [2023-11-12 01:01:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:20,048 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2059 transitions. [2023-11-12 01:01:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 01:01:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2059 transitions. [2023-11-12 01:01:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:01:20,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:20,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:20,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (6)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:20,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:01:20,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash 910828941, now seen corresponding path program 1 times [2023-11-12 01:01:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:01:20,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822045399] [2023-11-12 01:01:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:20,262 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 01:01:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:01:20,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:20,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (7)] Waiting until timeout for monitored process [2023-11-12 01:01:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:20,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:01:20,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:20,556 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 01:01:20,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:20,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:01:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822045399] [2023-11-12 01:01:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822045399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:01:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916121401] [2023-11-12 01:01:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:20,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:01:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:20,559 INFO L87 Difference]: Start difference. First operand 1615 states and 2059 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:21,799 INFO L93 Difference]: Finished difference Result 2291 states and 2839 transitions. [2023-11-12 01:01:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:21,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:01:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:21,809 INFO L225 Difference]: With dead ends: 2291 [2023-11-12 01:01:21,809 INFO L226 Difference]: Without dead ends: 2291 [2023-11-12 01:01:21,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:21,810 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 755 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:21,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 3894 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 01:01:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-11-12 01:01:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1878. [2023-11-12 01:01:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1288 states have (on average 1.970496894409938) internal successors, (2538), 1853 states have internal predecessors, (2538), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 01:01:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2582 transitions. [2023-11-12 01:01:21,865 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2582 transitions. Word has length 13 [2023-11-12 01:01:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:21,865 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2582 transitions. [2023-11-12 01:01:21,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2582 transitions. [2023-11-12 01:01:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:01:21,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:21,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:21,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (7)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:22,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr332REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-12 01:01:22,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 321620140, now seen corresponding path program 1 times [2023-11-12 01:01:22,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:01:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384440749] [2023-11-12 01:01:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:22,080 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 01:01:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:01:22,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 01:01:22,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62238332-9968-4d54-99fb-d4a7076f9fb5/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 (8)] Waiting until timeout for monitored process [2023-11-12 01:01:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:22,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:01:22,273 INFO L285 TraceCheckSpWp]: Computing forward predicates...