./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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_1455626d-aec8-40c4-9511-3b5833d3fdab/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 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:10,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:10,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:03:10,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:10,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:10,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:10,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:10,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:10,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:10,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:10,768 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:10,769 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:10,769 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:10,771 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:10,772 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:10,773 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:10,773 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:10,773 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:10,774 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:10,775 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:10,775 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:10,776 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:10,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:03:10,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:03:10,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:10,779 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:10,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:10,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:10,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:10,781 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:03:10,783 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:03:10,783 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:03:10,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:10,784 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:03:10,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:10,784 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:10,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:10,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:10,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:10,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:10,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:10,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:10,787 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:10,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:10,788 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:10,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:10,788 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_1455626d-aec8-40c4-9511-3b5833d3fdab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2023-11-12 01:03:11,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:11,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:11,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:11,095 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:11,096 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:11,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-12 01:03:14,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:14,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:14,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-12 01:03:14,773 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/f3a76b26f/2fa01d7770234dc0b00708050a10b33e/FLAG3b06dc6b1 [2023-11-12 01:03:14,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/f3a76b26f/2fa01d7770234dc0b00708050a10b33e [2023-11-12 01:03:14,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:14,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:14,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:14,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:14,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:14,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:14" (1/1) ... [2023-11-12 01:03:14,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702a5736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:14, skipping insertion in model container [2023-11-12 01:03:14,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:14" (1/1) ... [2023-11-12 01:03:14,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:15,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:15,556 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 01:03:15,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6767c27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:15, skipping insertion in model container [2023-11-12 01:03:15,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:15,558 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 01:03:15,560 INFO L158 Benchmark]: Toolchain (without parser) took 765.36ms. Allocated memory is still 169.9MB. Free memory was 128.4MB in the beginning and 110.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 01:03:15,561 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:03:15,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 762.45ms. Allocated memory is still 169.9MB. Free memory was 128.4MB in the beginning and 110.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 01:03:15,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 762.45ms. Allocated memory is still 169.9MB. Free memory was 128.4MB in the beginning and 110.9MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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_1455626d-aec8-40c4-9511-3b5833d3fdab/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 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:18,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:18,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 01:03:18,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:18,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:18,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:18,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:18,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:18,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:18,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:18,165 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:18,166 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:18,170 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:18,171 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:18,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:18,172 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:18,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:03:18,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:03:18,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:18,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:18,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:18,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:18,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:18,184 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:03:18,186 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:03:18,187 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:03:18,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:18,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:03:18,189 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 01:03:18,189 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 01:03:18,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:18,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:18,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:18,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:18,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 01:03:18,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:18,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:18,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:18,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:18,195 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 01:03:18,196 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:18,196 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:18,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:18,197 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_1455626d-aec8-40c4-9511-3b5833d3fdab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2023-11-12 01:03:18,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:18,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:18,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:18,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:18,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:18,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-12 01:03:21,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:22,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:22,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-12 01:03:22,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/0f02f8da9/e5db47cdf0ff49ffa5ec5c5fb606c46f/FLAGf9bd4108c [2023-11-12 01:03:22,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/data/0f02f8da9/e5db47cdf0ff49ffa5ec5c5fb606c46f [2023-11-12 01:03:22,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:22,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:22,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:22,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:22,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:22,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:22" (1/1) ... [2023-11-12 01:03:22,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7556c023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:22, skipping insertion in model container [2023-11-12 01:03:22,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:22" (1/1) ... [2023-11-12 01:03:22,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:23,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:23,294 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 01:03:23,309 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:23,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:23,391 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:23,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:23,582 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:23,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23 WrapperNode [2023-11-12 01:03:23,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:23,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:23,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:23,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:23,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,730 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 801 [2023-11-12 01:03:23,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:23,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:23,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:23,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:23,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,857 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:23,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:23,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:23,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:23,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (1/1) ... [2023-11-12 01:03:23,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:23,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:24,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 01:03:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 01:03:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:03:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:03:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 01:03:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 01:03:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 01:03:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 01:03:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:24,269 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:24,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:24,279 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 01:03:28,402 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:28,423 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:28,423 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-12 01:03:28,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:28 BoogieIcfgContainer [2023-11-12 01:03:28,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:28,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:28,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:28,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:28,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:22" (1/3) ... [2023-11-12 01:03:28,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a7a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:28, skipping insertion in model container [2023-11-12 01:03:28,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:23" (2/3) ... [2023-11-12 01:03:28,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a7a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:28, skipping insertion in model container [2023-11-12 01:03:28,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:28" (3/3) ... [2023-11-12 01:03:28,444 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i [2023-11-12 01:03:28,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:28,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2023-11-12 01:03:28,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:28,554 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;@13f3d5aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:28,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2023-11-12 01:03:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 426 states have (on average 2.232394366197183) internal successors, (951), 868 states have internal predecessors, (951), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 01:03:28,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:28,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 01:03:28,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:28,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-12 01:03:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389868383] [2023-11-12 01:03:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:28,598 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 01:03:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:28,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:28,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:28,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 01:03:28,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:28,773 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 01:03:28,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:28,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:28,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389868383] [2023-11-12 01:03:28,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389868383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:28,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:28,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:28,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848627862] [2023-11-12 01:03:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:03:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:03:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:03:28,820 INFO L87 Difference]: Start difference. First operand has 874 states, 426 states have (on average 2.232394366197183) internal successors, (951), 868 states have internal predecessors, (951), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 01:03:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:28,928 INFO L93 Difference]: Finished difference Result 864 states and 921 transitions. [2023-11-12 01:03:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:03:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-12 01:03:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:28,958 INFO L225 Difference]: With dead ends: 864 [2023-11-12 01:03:28,958 INFO L226 Difference]: Without dead ends: 862 [2023-11-12 01:03:28,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:03:28,965 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:28,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-11-12 01:03:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2023-11-12 01:03:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 420 states have (on average 2.126190476190476) internal successors, (893), 856 states have internal predecessors, (893), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 919 transitions. [2023-11-12 01:03:29,079 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 919 transitions. Word has length 5 [2023-11-12 01:03:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:29,080 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 919 transitions. [2023-11-12 01:03:29,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 01:03:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 919 transitions. [2023-11-12 01:03:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 01:03:29,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:29,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 01:03:29,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:29,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:29,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-12 01:03:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:29,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032340070] [2023-11-12 01:03:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:29,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:29,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:29,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:29,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:29,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:29,504 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 01:03:29,518 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 01:03:29,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:29,518 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032340070] [2023-11-12 01:03:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032340070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:29,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625708439] [2023-11-12 01:03:29,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:29,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:29,529 INFO L87 Difference]: Start difference. First operand 862 states and 919 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 01:03:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:31,410 INFO L93 Difference]: Finished difference Result 823 states and 881 transitions. [2023-11-12 01:03:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:31,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 01:03:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:31,415 INFO L225 Difference]: With dead ends: 823 [2023-11-12 01:03:31,416 INFO L226 Difference]: Without dead ends: 823 [2023-11-12 01:03:31,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 01:03:31,417 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 598 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:31,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 673 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 01:03:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-12 01:03:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 813. [2023-11-12 01:03:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 420 states have (on average 2.0095238095238095) internal successors, (844), 807 states have internal predecessors, (844), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 870 transitions. [2023-11-12 01:03:31,442 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 870 transitions. Word has length 5 [2023-11-12 01:03:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:31,443 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 870 transitions. [2023-11-12 01:03:31,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 01:03:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 870 transitions. [2023-11-12 01:03:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 01:03:31,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:31,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 01:03:31,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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)] Ended with exit code 0 [2023-11-12 01:03:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:31,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:31,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-12 01:03:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303620609] [2023-11-12 01:03:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:31,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:31,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:31,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:31,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:31,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:31,801 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 01:03:31,830 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 01:03:31,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:31,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303620609] [2023-11-12 01:03:31,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303620609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:31,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180912553] [2023-11-12 01:03:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:31,840 INFO L87 Difference]: Start difference. First operand 813 states and 870 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 01:03:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,195 INFO L93 Difference]: Finished difference Result 883 states and 944 transitions. [2023-11-12 01:03:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 01:03:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,202 INFO L225 Difference]: With dead ends: 883 [2023-11-12 01:03:34,202 INFO L226 Difference]: Without dead ends: 883 [2023-11-12 01:03:34,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 01:03:34,204 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 258 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1074 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 01:03:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-12 01:03:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 835. [2023-11-12 01:03:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 452 states have (on average 1.991150442477876) internal successors, (900), 829 states have internal predecessors, (900), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 926 transitions. [2023-11-12 01:03:34,238 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 926 transitions. Word has length 5 [2023-11-12 01:03:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,239 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 926 transitions. [2023-11-12 01:03:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 01:03:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 926 transitions. [2023-11-12 01:03:34,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 01:03:34,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:34,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-12 01:03:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:34,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609624158] [2023-11-12 01:03:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:34,453 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 01:03:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:34,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:34,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:03:34,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:34,575 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 01:03:34,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:34,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609624158] [2023-11-12 01:03:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609624158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83605774] [2023-11-12 01:03:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:34,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:34,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:34,585 INFO L87 Difference]: Start difference. First operand 835 states and 926 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,719 INFO L93 Difference]: Finished difference Result 1419 states and 1570 transitions. [2023-11-12 01:03:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 01:03:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,734 INFO L225 Difference]: With dead ends: 1419 [2023-11-12 01:03:34,734 INFO L226 Difference]: Without dead ends: 1419 [2023-11-12 01:03:34,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:34,738 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 571 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1710 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-12 01:03:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 836. [2023-11-12 01:03:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 453 states have (on average 1.988962472406181) internal successors, (901), 830 states have internal predecessors, (901), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 927 transitions. [2023-11-12 01:03:34,774 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 927 transitions. Word has length 6 [2023-11-12 01:03:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,774 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 927 transitions. [2023-11-12 01:03:34,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 927 transitions. [2023-11-12 01:03:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 01:03:34,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:34,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-12 01:03:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687833307] [2023-11-12 01:03:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:34,989 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 01:03:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:34,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:34,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:03:35,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:35,149 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 01:03:35,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:35,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687833307] [2023-11-12 01:03:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687833307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128988952] [2023-11-12 01:03:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:35,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:35,152 INFO L87 Difference]: Start difference. First operand 836 states and 927 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 01:03:35,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,198 INFO L93 Difference]: Finished difference Result 794 states and 884 transitions. [2023-11-12 01:03:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-12 01:03:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,203 INFO L225 Difference]: With dead ends: 794 [2023-11-12 01:03:35,203 INFO L226 Difference]: Without dead ends: 794 [2023-11-12 01:03:35,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 01:03:35,204 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 81 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1538 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-12 01:03:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2023-11-12 01:03:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 435 states have (on average 1.9724137931034482) internal successors, (858), 788 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 884 transitions. [2023-11-12 01:03:35,228 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 884 transitions. Word has length 11 [2023-11-12 01:03:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,229 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 884 transitions. [2023-11-12 01:03:35,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 01:03:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 884 transitions. [2023-11-12 01:03:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:03:35,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:35,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:35,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:35,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:35,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-12 01:03:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:35,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451651081] [2023-11-12 01:03:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,447 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 01:03:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:35,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:35,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:35,653 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 01:03:35,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:35,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451651081] [2023-11-12 01:03:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451651081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564163872] [2023-11-12 01:03:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:35,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:35,657 INFO L87 Difference]: Start difference. First operand 794 states and 884 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:03:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,771 INFO L93 Difference]: Finished difference Result 773 states and 856 transitions. [2023-11-12 01:03:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:35,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-12 01:03:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,777 INFO L225 Difference]: With dead ends: 773 [2023-11-12 01:03:35,777 INFO L226 Difference]: Without dead ends: 773 [2023-11-12 01:03:35,778 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 01:03:35,779 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 62 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2246 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-12 01:03:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 772. [2023-11-12 01:03:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 427 states have (on average 1.9414519906323184) internal successors, (829), 766 states have internal predecessors, (829), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 855 transitions. [2023-11-12 01:03:35,807 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 855 transitions. Word has length 13 [2023-11-12 01:03:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,807 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 855 transitions. [2023-11-12 01:03:35,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:03:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 855 transitions. [2023-11-12 01:03:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 01:03:35,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:35,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:35,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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)] Ended with exit code 0 [2023-11-12 01:03:36,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:36,022 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:36,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-12 01:03:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601277123] [2023-11-12 01:03:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:36,023 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 01:03:36,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:36,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:36,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:36,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:36,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:36,190 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 01:03:36,284 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 01:03:36,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:36,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601277123] [2023-11-12 01:03:36,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601277123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:36,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:36,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918437208] [2023-11-12 01:03:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:36,287 INFO L87 Difference]: Start difference. First operand 772 states and 855 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 01:03:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:38,555 INFO L93 Difference]: Finished difference Result 778 states and 862 transitions. [2023-11-12 01:03:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:38,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-12 01:03:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:38,561 INFO L225 Difference]: With dead ends: 778 [2023-11-12 01:03:38,561 INFO L226 Difference]: Without dead ends: 778 [2023-11-12 01:03:38,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 01:03:38,562 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 527 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:38,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 958 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 01:03:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-11-12 01:03:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 768. [2023-11-12 01:03:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 427 states have (on average 1.9320843091334894) internal successors, (825), 762 states have internal predecessors, (825), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 851 transitions. [2023-11-12 01:03:38,584 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 851 transitions. Word has length 27 [2023-11-12 01:03:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:38,584 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 851 transitions. [2023-11-12 01:03:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 01:03:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 851 transitions. [2023-11-12 01:03:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 01:03:38,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:38,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:38,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:38,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:38,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-12 01:03:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680261542] [2023-11-12 01:03:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,800 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 01:03:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:38,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:38,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (9)] Waiting until timeout for monitored process [2023-11-12 01:03:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 01:03:38,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:39,001 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 01:03:39,252 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 01:03:39,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:39,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680261542] [2023-11-12 01:03:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680261542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545047593] [2023-11-12 01:03:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:39,255 INFO L87 Difference]: Start difference. First operand 768 states and 851 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 01:03:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:41,916 INFO L93 Difference]: Finished difference Result 812 states and 865 transitions. [2023-11-12 01:03:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-12 01:03:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:41,923 INFO L225 Difference]: With dead ends: 812 [2023-11-12 01:03:41,923 INFO L226 Difference]: Without dead ends: 812 [2023-11-12 01:03:41,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 01:03:41,924 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 189 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:41,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1396 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 01:03:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2023-11-12 01:03:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 764. [2023-11-12 01:03:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 427 states have (on average 1.9227166276346603) internal successors, (821), 758 states have internal predecessors, (821), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 847 transitions. [2023-11-12 01:03:41,947 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 847 transitions. Word has length 27 [2023-11-12 01:03:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:41,947 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 847 transitions. [2023-11-12 01:03:41,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 01:03:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 847 transitions. [2023-11-12 01:03:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 01:03:41,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:41,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:41,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (9)] Ended with exit code 0 [2023-11-12 01:03:42,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:42,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:42,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:42,162 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-12 01:03:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:42,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016872238] [2023-11-12 01:03:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:42,163 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 01:03:42,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:42,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:42,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (10)] Waiting until timeout for monitored process [2023-11-12 01:03:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:42,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:42,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:42,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:42,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016872238] [2023-11-12 01:03:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016872238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055437017] [2023-11-12 01:03:42,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:42,437 INFO L87 Difference]: Start difference. First operand 764 states and 847 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:03:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:42,508 INFO L93 Difference]: Finished difference Result 758 states and 837 transitions. [2023-11-12 01:03:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-12 01:03:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:42,513 INFO L225 Difference]: With dead ends: 758 [2023-11-12 01:03:42,514 INFO L226 Difference]: Without dead ends: 758 [2023-11-12 01:03:42,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 01:03:42,515 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 31 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:42,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2224 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-11-12 01:03:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2023-11-12 01:03:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 421 states have (on average 1.9263657957244655) internal successors, (811), 752 states have internal predecessors, (811), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 837 transitions. [2023-11-12 01:03:42,535 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 837 transitions. Word has length 43 [2023-11-12 01:03:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:42,535 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 837 transitions. [2023-11-12 01:03:42,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:03:42,536 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 837 transitions. [2023-11-12 01:03:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 01:03:42,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:42,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:42,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (10)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:42,751 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:42,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-12 01:03:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067073159] [2023-11-12 01:03:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:42,752 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 01:03:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:42,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:42,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (11)] Waiting until timeout for monitored process [2023-11-12 01:03:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:42,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:42,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:43,306 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 01:03:43,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:43,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067073159] [2023-11-12 01:03:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067073159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:43,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861574875] [2023-11-12 01:03:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:43,309 INFO L87 Difference]: Start difference. First operand 758 states and 837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:03:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:43,608 INFO L93 Difference]: Finished difference Result 1002 states and 1090 transitions. [2023-11-12 01:03:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-11-12 01:03:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:43,615 INFO L225 Difference]: With dead ends: 1002 [2023-11-12 01:03:43,615 INFO L226 Difference]: Without dead ends: 1002 [2023-11-12 01:03:43,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 01:03:43,616 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 271 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:43,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1476 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:03:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-12 01:03:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 805. [2023-11-12 01:03:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 468 states have (on average 1.8333333333333333) internal successors, (858), 799 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 884 transitions. [2023-11-12 01:03:43,639 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 884 transitions. Word has length 51 [2023-11-12 01:03:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:43,640 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 884 transitions. [2023-11-12 01:03:43,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:03:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 884 transitions. [2023-11-12 01:03:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 01:03:43,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:43,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:43,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (11)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:43,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:43,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:43,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-12 01:03:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510385196] [2023-11-12 01:03:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:43,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:43,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:43,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:43,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (12)] Waiting until timeout for monitored process [2023-11-12 01:03:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:44,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:44,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:44,320 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 01:03:44,328 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 01:03:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:03:44,993 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 01:03:45,012 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 01:03:45,013 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 01:03:45,035 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 01:03:45,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:45,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:45,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510385196] [2023-11-12 01:03:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510385196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:45,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264238308] [2023-11-12 01:03:45,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:45,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:45,038 INFO L87 Difference]: Start difference. First operand 805 states and 884 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 01:03:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:47,247 INFO L93 Difference]: Finished difference Result 777 states and 857 transitions. [2023-11-12 01:03:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-11-12 01:03:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:47,253 INFO L225 Difference]: With dead ends: 777 [2023-11-12 01:03:47,253 INFO L226 Difference]: Without dead ends: 777 [2023-11-12 01:03:47,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 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 01:03:47,254 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 399 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:47,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 691 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 01:03:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-12 01:03:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 735. [2023-11-12 01:03:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 436 states have (on average 1.7293577981651376) internal successors, (754), 729 states have internal predecessors, (754), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 780 transitions. [2023-11-12 01:03:47,272 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 780 transitions. Word has length 54 [2023-11-12 01:03:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:47,272 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 780 transitions. [2023-11-12 01:03:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 01:03:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 780 transitions. [2023-11-12 01:03:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 01:03:47,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:47,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:47,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (12)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:47,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:47,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:47,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-12 01:03:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831954618] [2023-11-12 01:03:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:47,490 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 01:03:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:47,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:47,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (13)] Waiting until timeout for monitored process [2023-11-12 01:03:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:47,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 01:03:47,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:47,818 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 01:03:47,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-12 01:03:47,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-12 01:03:47,887 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 01:03:47,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:47,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831954618] [2023-11-12 01:03:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831954618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:47,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:47,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:47,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702668475] [2023-11-12 01:03:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:47,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:47,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:47,891 INFO L87 Difference]: Start difference. First operand 735 states and 780 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 01:03:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:50,237 INFO L93 Difference]: Finished difference Result 734 states and 779 transitions. [2023-11-12 01:03:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:03:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-12 01:03:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:50,242 INFO L225 Difference]: With dead ends: 734 [2023-11-12 01:03:50,242 INFO L226 Difference]: Without dead ends: 734 [2023-11-12 01:03:50,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:03:50,243 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:50,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1870 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 01:03:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-11-12 01:03:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2023-11-12 01:03:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 436 states have (on average 1.7270642201834863) internal successors, (753), 728 states have internal predecessors, (753), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 779 transitions. [2023-11-12 01:03:50,262 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 779 transitions. Word has length 59 [2023-11-12 01:03:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:50,262 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 779 transitions. [2023-11-12 01:03:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 01:03:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 779 transitions. [2023-11-12 01:03:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 01:03:50,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:50,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:50,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (13)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:50,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:50,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -313883617, now seen corresponding path program 1 times [2023-11-12 01:03:50,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:50,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600379364] [2023-11-12 01:03:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:50,481 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 01:03:50,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:50,482 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:50,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (14)] Waiting until timeout for monitored process [2023-11-12 01:03:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:50,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 01:03:50,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:50,806 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 01:03:50,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-11-12 01:03:50,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-12 01:03:50,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-12 01:03:50,931 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 01:03:50,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:50,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600379364] [2023-11-12 01:03:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600379364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:50,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175054112] [2023-11-12 01:03:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:50,935 INFO L87 Difference]: Start difference. First operand 734 states and 779 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 01:03:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:54,125 INFO L93 Difference]: Finished difference Result 733 states and 778 transitions. [2023-11-12 01:03:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:03:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-12 01:03:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:54,131 INFO L225 Difference]: With dead ends: 733 [2023-11-12 01:03:54,131 INFO L226 Difference]: Without dead ends: 733 [2023-11-12 01:03:54,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:03:54,132 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:54,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1896 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 01:03:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-11-12 01:03:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2023-11-12 01:03:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 435 states have (on average 1.728735632183908) internal successors, (752), 727 states have internal predecessors, (752), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 01:03:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 778 transitions. [2023-11-12 01:03:54,151 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 778 transitions. Word has length 59 [2023-11-12 01:03:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:54,151 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 778 transitions. [2023-11-12 01:03:54,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 01:03:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 778 transitions. [2023-11-12 01:03:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 01:03:54,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:54,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:54,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (14)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:54,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:54,368 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 32368709, now seen corresponding path program 1 times [2023-11-12 01:03:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336556229] [2023-11-12 01:03:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:54,369 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 01:03:54,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:54,370 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:54,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (15)] Waiting until timeout for monitored process [2023-11-12 01:03:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:54,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:54,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:54,732 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 01:03:54,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:54,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336556229] [2023-11-12 01:03:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336556229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:54,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852954625] [2023-11-12 01:03:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:54,737 INFO L87 Difference]: Start difference. First operand 733 states and 778 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 01:03:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:54,795 INFO L93 Difference]: Finished difference Result 736 states and 782 transitions. [2023-11-12 01:03:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:54,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-11-12 01:03:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:54,806 INFO L225 Difference]: With dead ends: 736 [2023-11-12 01:03:54,806 INFO L226 Difference]: Without dead ends: 736 [2023-11-12 01:03:54,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 01:03:54,807 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:54,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2176 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-11-12 01:03:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-11-12 01:03:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 437 states have (on average 1.7276887871853548) internal successors, (755), 730 states have internal predecessors, (755), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-12 01:03:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 782 transitions. [2023-11-12 01:03:54,829 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 782 transitions. Word has length 67 [2023-11-12 01:03:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:54,830 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 782 transitions. [2023-11-12 01:03:54,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 01:03:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 782 transitions. [2023-11-12 01:03:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 01:03:54,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:54,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:54,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (15)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:55,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:55,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1983237716, now seen corresponding path program 1 times [2023-11-12 01:03:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270816320] [2023-11-12 01:03:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:55,053 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 01:03:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:55,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:55,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (16)] Waiting until timeout for monitored process [2023-11-12 01:03:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:55,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:55,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:55,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:55,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270816320] [2023-11-12 01:03:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270816320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753864408] [2023-11-12 01:03:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:55,527 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 01:03:55,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 01:03:55,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-12 01:03:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:56,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:56,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:56,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [753864408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777884610] [2023-11-12 01:03:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:56,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:56,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:56,170 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:56,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-12 01:03:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:56,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:56,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:56,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777884610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:56,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 01:03:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-12 01:03:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431288723] [2023-11-12 01:03:56,565 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:56,568 INFO L87 Difference]: Start difference. First operand 736 states and 782 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 01:03:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:56,819 INFO L93 Difference]: Finished difference Result 748 states and 799 transitions. [2023-11-12 01:03:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:03:56,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-12 01:03:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:56,825 INFO L225 Difference]: With dead ends: 748 [2023-11-12 01:03:56,825 INFO L226 Difference]: Without dead ends: 748 [2023-11-12 01:03:56,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-12 01:03:56,826 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 9 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:56,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4343 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-12 01:03:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-11-12 01:03:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 446 states have (on average 1.7264573991031391) internal successors, (770), 739 states have internal predecessors, (770), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-12 01:03:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 797 transitions. [2023-11-12 01:03:56,846 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 797 transitions. Word has length 68 [2023-11-12 01:03:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:56,846 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 797 transitions. [2023-11-12 01:03:56,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 01:03:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 797 transitions. [2023-11-12 01:03:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 01:03:56,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:56,848 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:56,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:57,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (16)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:57,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:57,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:57,460 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-12 01:03:57,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 996706821, now seen corresponding path program 2 times [2023-11-12 01:03:57,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:57,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026578223] [2023-11-12 01:03:57,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 01:03:57,462 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 01:03:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:57,463 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 01:03:57,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/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 (19)] Waiting until timeout for monitored process [2023-11-12 01:03:57,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 01:03:57,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:57,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:57,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:58,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:58,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:58,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026578223] [2023-11-12 01:03:58,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026578223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:58,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709965590] [2023-11-12 01:03:58,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 01:03:58,307 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:58,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 01:03:58,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 01:03:58,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-12 01:03:59,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 01:03:59,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:59,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:59,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:59,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709965590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051020494] [2023-11-12 01:03:59,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 01:03:59,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:59,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:59,448 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:59,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1455626d-aec8-40c4-9511-3b5833d3fdab/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process