./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:30,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:30,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:02:30,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:30,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:30,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:30,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:30,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:30,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:30,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:30,848 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:30,849 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:30,849 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:30,850 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:30,851 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:30,851 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:30,852 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:30,852 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:30,853 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:30,854 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:30,854 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:30,855 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:30,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:02:30,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:02:30,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:30,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:30,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:30,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:30,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:30,860 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:02:30,860 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:02:30,860 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:02:30,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:30,861 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:02:30,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:30,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:30,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:30,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:30,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:30,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:30,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:30,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:30,865 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:30,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:30,866 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:30,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:30,867 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_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-19 05:02:31,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:31,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:31,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:31,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:31,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:31,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-19 05:02:34,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:34,684 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:34,685 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-19 05:02:34,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/eabf3f9f2/dcd155a30ae344ac8cfe76da856a57f3/FLAGe2eb487a5 [2023-11-19 05:02:34,719 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/eabf3f9f2/dcd155a30ae344ac8cfe76da856a57f3 [2023-11-19 05:02:34,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:34,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:34,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:34,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:34,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:34,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:34" (1/1) ... [2023-11-19 05:02:34,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6083734c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:34, skipping insertion in model container [2023-11-19 05:02:34,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:34" (1/1) ... [2023-11-19 05:02:34,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:35,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:35,433 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) [2023-11-19 05:02:35,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47859570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:35, skipping insertion in model container [2023-11-19 05:02:35,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:35,435 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:02:35,436 INFO L158 Benchmark]: Toolchain (without parser) took 712.02ms. Allocated memory is still 140.5MB. Free memory was 108.4MB in the beginning and 88.1MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:02:35,437 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:35,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.65ms. Allocated memory is still 140.5MB. Free memory was 107.9MB in the beginning and 88.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:02:35,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.65ms. Allocated memory is still 140.5MB. Free memory was 107.9MB in the beginning and 88.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:37,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:38,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:02:38,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:38,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:38,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:38,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:38,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:38,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:38,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:38,145 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:38,145 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:38,146 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:38,147 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:38,148 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:38,148 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:38,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:02:38,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:02:38,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:38,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:38,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:38,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:38,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:38,153 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:02:38,154 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:02:38,154 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:02:38,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:38,155 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:02:38,155 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:02:38,156 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:02:38,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:38,157 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:38,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:38,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:38,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:02:38,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:38,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:38,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:38,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:38,160 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:02:38,161 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:02:38,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:38,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:38,162 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_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-19 05:02:38,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:38,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:38,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:38,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:38,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:38,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-19 05:02:41,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:41,961 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:41,961 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-19 05:02:41,982 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/6e2845a3a/b5fff51096744c3093a2f50b471be798/FLAG999dcc7e2 [2023-11-19 05:02:42,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/data/6e2845a3a/b5fff51096744c3093a2f50b471be798 [2023-11-19 05:02:42,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:42,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:42,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:42,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:42,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:42,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cde7943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:42, skipping insertion in model container [2023-11-19 05:02:42,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:42" (1/1) ... [2023-11-19 05:02:42,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:42,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:42,817 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:02:42,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:42,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:42,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:43,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:43,107 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:43,116 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:43,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43 WrapperNode [2023-11-19 05:02:43,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:43,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:43,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:43,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:43,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,239 INFO L138 Inliner]: procedures = 179, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-19 05:02:43,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:43,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:43,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:43,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:43,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:43,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:43,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:43,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:43,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:43,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:43,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:43,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:02:43,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:02:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:02:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:02:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:02:43,529 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:02:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:02:43,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:02:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:02:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:02:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:02:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:02:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:43,786 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:43,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:43,827 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:02:49,084 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:49,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:49,101 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-19 05:02:49,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:49 BoogieIcfgContainer [2023-11-19 05:02:49,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:49,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:49,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:49,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:49,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:42" (1/3) ... [2023-11-19 05:02:49,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dd0b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:49, skipping insertion in model container [2023-11-19 05:02:49,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (2/3) ... [2023-11-19 05:02:49,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dd0b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:49, skipping insertion in model container [2023-11-19 05:02:49,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:49" (3/3) ... [2023-11-19 05:02:49,118 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2023-11-19 05:02:49,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:49,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2023-11-19 05:02:49,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:49,211 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;@610e1919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:49,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2023-11-19 05:02:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:02:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:02:49,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:49,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:02:49,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:02:49,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-19 05:02:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:49,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385117285] [2023-11-19 05:02:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:49,242 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 [2023-11-19 05:02:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:49,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:02:49,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:49,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:02:49,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:49,544 INFO L378 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 [2023-11-19 05:02:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:49,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:49,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:02:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385117285] [2023-11-19 05:02:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385117285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:49,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391131487] [2023-11-19 05:02:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:02:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:49,614 INFO L87 Difference]: Start difference. First operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:52,282 INFO L93 Difference]: Finished difference Result 1434 states and 1509 transitions. [2023-11-19 05:02:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:02:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:52,310 INFO L225 Difference]: With dead ends: 1434 [2023-11-19 05:02:52,310 INFO L226 Difference]: Without dead ends: 1432 [2023-11-19 05:02:52,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:52,316 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1167 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:52,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 914 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:02:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-19 05:02:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1244. [2023-11-19 05:02:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1311 transitions. [2023-11-19 05:02:52,424 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1311 transitions. Word has length 3 [2023-11-19 05:02:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:52,425 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1311 transitions. [2023-11-19 05:02:52,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1311 transitions. [2023-11-19 05:02:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:02:52,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:52,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:02:52,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:52,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:02:52,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-19 05:02:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39420915] [2023-11-19 05:02:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:52,630 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 [2023-11-19 05:02:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:52,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:02:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:52,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:02:52,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:52,789 INFO L378 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 [2023-11-19 05:02:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:52,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:52,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:02:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39420915] [2023-11-19 05:02:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39420915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634717700] [2023-11-19 05:02:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:02:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:52,813 INFO L87 Difference]: Start difference. First operand 1244 states and 1311 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:57,001 INFO L93 Difference]: Finished difference Result 1838 states and 1947 transitions. [2023-11-19 05:02:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:57,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:02:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:57,011 INFO L225 Difference]: With dead ends: 1838 [2023-11-19 05:02:57,012 INFO L226 Difference]: Without dead ends: 1838 [2023-11-19 05:02:57,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:57,014 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 634 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:57,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1710 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 05:02:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-11-19 05:02:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1450. [2023-11-19 05:02:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 830 states have (on average 2.0734939759036144) internal successors, (1721), 1444 states have internal predecessors, (1721), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1729 transitions. [2023-11-19 05:02:57,060 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1729 transitions. Word has length 3 [2023-11-19 05:02:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:57,061 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1729 transitions. [2023-11-19 05:02:57,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1729 transitions. [2023-11-19 05:02:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:02:57,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:57,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:57,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:57,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:57,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:02:57,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-19 05:02:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839556329] [2023-11-19 05:02:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:57,267 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 [2023-11-19 05:02:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:57,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:02:57,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:57,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:02:57,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:57,488 INFO L378 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 [2023-11-19 05:02:57,496 INFO L378 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 [2023-11-19 05:02:57,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:02:57,591 INFO L378 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 [2023-11-19 05:02:57,613 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:02:57,614 INFO L378 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 [2023-11-19 05:02:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:57,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:57,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:02:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839556329] [2023-11-19 05:02:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839556329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:57,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303705597] [2023-11-19 05:02:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:57,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:02:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:02:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:02:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:02:57,648 INFO L87 Difference]: Start difference. First operand 1450 states and 1729 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:01,965 INFO L93 Difference]: Finished difference Result 1632 states and 1922 transitions. [2023-11-19 05:03:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:03:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:01,975 INFO L225 Difference]: With dead ends: 1632 [2023-11-19 05:03:01,975 INFO L226 Difference]: Without dead ends: 1632 [2023-11-19 05:03:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:01,976 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1464 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:01,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 530 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 05:03:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-19 05:03:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1233. [2023-11-19 05:03:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 623 states have (on average 2.07223113964687) internal successors, (1291), 1227 states have internal predecessors, (1291), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1299 transitions. [2023-11-19 05:03:02,012 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1299 transitions. Word has length 7 [2023-11-19 05:03:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:02,012 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1299 transitions. [2023-11-19 05:03:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1299 transitions. [2023-11-19 05:03:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:03:02,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:02,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:02,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:03:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:02,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:02,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-19 05:03:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070199676] [2023-11-19 05:03:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:02,229 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 [2023-11-19 05:03:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:02,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:02,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:02,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:02,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:02,389 INFO L378 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 [2023-11-19 05:03:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:02,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:02,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070199676] [2023-11-19 05:03:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070199676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10104866] [2023-11-19 05:03:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:02,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:02,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:02,408 INFO L87 Difference]: Start difference. First operand 1233 states and 1299 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:05,032 INFO L93 Difference]: Finished difference Result 1566 states and 1662 transitions. [2023-11-19 05:03:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:05,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:03:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:05,041 INFO L225 Difference]: With dead ends: 1566 [2023-11-19 05:03:05,041 INFO L226 Difference]: Without dead ends: 1566 [2023-11-19 05:03:05,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:05,042 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 979 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:05,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1504 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:03:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-19 05:03:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1186. [2023-11-19 05:03:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 623 states have (on average 1.9967897271268058) internal successors, (1244), 1180 states have internal predecessors, (1244), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1252 transitions. [2023-11-19 05:03:05,074 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1252 transitions. Word has length 8 [2023-11-19 05:03:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:05,074 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1252 transitions. [2023-11-19 05:03:05,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1252 transitions. [2023-11-19 05:03:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:03:05,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:05,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:05,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:03:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:05,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:05,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-19 05:03:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983729012] [2023-11-19 05:03:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:05,279 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 [2023-11-19 05:03:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:05,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:05,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:05,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:05,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:05,429 INFO L378 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 [2023-11-19 05:03:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:05,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:05,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983729012] [2023-11-19 05:03:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983729012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936109732] [2023-11-19 05:03:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:05,463 INFO L87 Difference]: Start difference. First operand 1186 states and 1252 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:09,222 INFO L93 Difference]: Finished difference Result 1648 states and 1747 transitions. [2023-11-19 05:03:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:03:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:09,231 INFO L225 Difference]: With dead ends: 1648 [2023-11-19 05:03:09,231 INFO L226 Difference]: Without dead ends: 1648 [2023-11-19 05:03:09,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:09,233 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 682 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:09,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1881 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-19 05:03:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-11-19 05:03:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1208. [2023-11-19 05:03:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 655 states have (on average 1.984732824427481) internal successors, (1300), 1202 states have internal predecessors, (1300), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1308 transitions. [2023-11-19 05:03:09,268 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1308 transitions. Word has length 8 [2023-11-19 05:03:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:09,268 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1308 transitions. [2023-11-19 05:03:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1308 transitions. [2023-11-19 05:03:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:03:09,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:09,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:09,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:03:09,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:09,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:09,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2045817064, now seen corresponding path program 1 times [2023-11-19 05:03:09,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:09,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945550854] [2023-11-19 05:03:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:09,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:09,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:09,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:09,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:03:09,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:09,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:09,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945550854] [2023-11-19 05:03:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945550854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:09,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13454194] [2023-11-19 05:03:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:09,750 INFO L87 Difference]: Start difference. First operand 1208 states and 1308 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:10,886 INFO L93 Difference]: Finished difference Result 1861 states and 2005 transitions. [2023-11-19 05:03:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:03:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:03:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:10,896 INFO L225 Difference]: With dead ends: 1861 [2023-11-19 05:03:10,897 INFO L226 Difference]: Without dead ends: 1861 [2023-11-19 05:03:10,897 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 [2023-11-19 05:03:10,898 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 761 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:10,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3682 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:03:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-11-19 05:03:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1458. [2023-11-19 05:03:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 905 states have (on average 1.9502762430939227) internal successors, (1765), 1452 states have internal predecessors, (1765), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1773 transitions. [2023-11-19 05:03:10,939 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1773 transitions. Word has length 13 [2023-11-19 05:03:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:10,939 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1773 transitions. [2023-11-19 05:03:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1773 transitions. [2023-11-19 05:03:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:03:10,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:10,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:10,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:11,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1459496966, now seen corresponding path program 1 times [2023-11-19 05:03:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751685193] [2023-11-19 05:03:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:11,145 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 [2023-11-19 05:03:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:11,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:11,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:11,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:03:11,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:11,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:11,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751685193] [2023-11-19 05:03:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751685193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:11,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:11,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396808020] [2023-11-19 05:03:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:11,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,360 INFO L87 Difference]: Start difference. First operand 1458 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-19 05:03:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:11,408 INFO L93 Difference]: Finished difference Result 1398 states and 1687 transitions. [2023-11-19 05:03:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2023-11-19 05:03:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:11,416 INFO L225 Difference]: With dead ends: 1398 [2023-11-19 05:03:11,417 INFO L226 Difference]: Without dead ends: 1398 [2023-11-19 05:03:11,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,420 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 81 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2286 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 [2023-11-19 05:03:11,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2286 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:03:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-19 05:03:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2023-11-19 05:03:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 869 states have (on average 1.9321058688147297) internal successors, (1679), 1392 states have internal predecessors, (1679), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1687 transitions. [2023-11-19 05:03:11,451 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1687 transitions. Word has length 13 [2023-11-19 05:03:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:11,452 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1687 transitions. [2023-11-19 05:03:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-19 05:03:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1687 transitions. [2023-11-19 05:03:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:03:11,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:11,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:11,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:11,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1877695967, now seen corresponding path program 1 times [2023-11-19 05:03:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655073725] [2023-11-19 05:03:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:11,660 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 [2023-11-19 05:03:11,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:11,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:11,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:11,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:11,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:11,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:11,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655073725] [2023-11-19 05:03:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655073725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676192414] [2023-11-19 05:03:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:11,847 INFO L87 Difference]: Start difference. First operand 1398 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-19 05:03:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:11,932 INFO L93 Difference]: Finished difference Result 1370 states and 1631 transitions. [2023-11-19 05:03:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-11-19 05:03:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:11,939 INFO L225 Difference]: With dead ends: 1370 [2023-11-19 05:03:11,939 INFO L226 Difference]: Without dead ends: 1370 [2023-11-19 05:03:11,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:11,940 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 62 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3368 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 [2023-11-19 05:03:11,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3368 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-11-19 05:03:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-11-19 05:03:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 853 states have (on average 1.9003516998827668) internal successors, (1621), 1362 states have internal predecessors, (1621), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1629 transitions. [2023-11-19 05:03:11,982 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1629 transitions. Word has length 15 [2023-11-19 05:03:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:11,982 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1629 transitions. [2023-11-19 05:03:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-19 05:03:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1629 transitions. [2023-11-19 05:03:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:03:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:11,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:11,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:12,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:12,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash 816098230, now seen corresponding path program 1 times [2023-11-19 05:03:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578869249] [2023-11-19 05:03:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:12,189 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 [2023-11-19 05:03:12,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:12,190 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:12,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:12,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:12,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:12,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:12,436 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:12,437 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:12,443 INFO L378 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 30 treesize of output 39 [2023-11-19 05:03:12,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:03:12,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 05:03:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:12,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:12,531 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578869249] [2023-11-19 05:03:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578869249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:12,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:12,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044160997] [2023-11-19 05:03:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:12,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:12,534 INFO L87 Difference]: Start difference. First operand 1368 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 05:03:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,083 INFO L93 Difference]: Finished difference Result 1808 states and 2130 transitions. [2023-11-19 05:03:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-19 05:03:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,091 INFO L225 Difference]: With dead ends: 1808 [2023-11-19 05:03:14,091 INFO L226 Difference]: Without dead ends: 1808 [2023-11-19 05:03:14,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:14,092 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 428 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3237 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 05:03:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-11-19 05:03:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1367. [2023-11-19 05:03:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 852 states have (on average 1.9002347417840375) internal successors, (1619), 1361 states have internal predecessors, (1619), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1627 transitions. [2023-11-19 05:03:14,151 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1627 transitions. Word has length 16 [2023-11-19 05:03:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,152 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1627 transitions. [2023-11-19 05:03:14,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 05:03:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1627 transitions. [2023-11-19 05:03:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:03:14,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:14,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:14,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:14,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-19 05:03:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:14,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319138562] [2023-11-19 05:03:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,358 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 [2023-11-19 05:03:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:14,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:14,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:03:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:14,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:14,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319138562] [2023-11-19 05:03:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319138562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:14,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:14,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138584634] [2023-11-19 05:03:14,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:14,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,581 INFO L87 Difference]: Start difference. First operand 1367 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-19 05:03:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,623 INFO L93 Difference]: Finished difference Result 1307 states and 1541 transitions. [2023-11-19 05:03:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:14,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-19 05:03:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,630 INFO L225 Difference]: With dead ends: 1307 [2023-11-19 05:03:14,631 INFO L226 Difference]: Without dead ends: 1307 [2023-11-19 05:03:14,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,632 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 81 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2130 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 [2023-11-19 05:03:14,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:03:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-19 05:03:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-19 05:03:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 816 states have (on average 1.8786764705882353) internal successors, (1533), 1301 states have internal predecessors, (1533), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1541 transitions. [2023-11-19 05:03:14,660 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1541 transitions. Word has length 18 [2023-11-19 05:03:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,660 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1541 transitions. [2023-11-19 05:03:14,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-19 05:03:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1541 transitions. [2023-11-19 05:03:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:03:14,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,662 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] [2023-11-19 05:03:14,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:14,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-19 05:03:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431401683] [2023-11-19 05:03:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,868 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 [2023-11-19 05:03:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:14,869 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:14,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:15,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:15,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:15,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:15,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431401683] [2023-11-19 05:03:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431401683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:15,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:15,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:15,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457724106] [2023-11-19 05:03:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:15,129 INFO L87 Difference]: Start difference. First operand 1307 states and 1541 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-19 05:03:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:15,229 INFO L93 Difference]: Finished difference Result 1279 states and 1485 transitions. [2023-11-19 05:03:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-19 05:03:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:15,237 INFO L225 Difference]: With dead ends: 1279 [2023-11-19 05:03:15,237 INFO L226 Difference]: Without dead ends: 1279 [2023-11-19 05:03:15,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:15,238 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 62 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3134 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 [2023-11-19 05:03:15,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-19 05:03:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1277. [2023-11-19 05:03:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 800 states have (on average 1.84375) internal successors, (1475), 1271 states have internal predecessors, (1475), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1483 transitions. [2023-11-19 05:03:15,266 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1483 transitions. Word has length 20 [2023-11-19 05:03:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:15,266 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1483 transitions. [2023-11-19 05:03:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-19 05:03:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1483 transitions. [2023-11-19 05:03:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:03:15,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:15,268 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] [2023-11-19 05:03:15,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:03:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:15,472 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:15,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-19 05:03:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466569373] [2023-11-19 05:03:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:15,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:15,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:15,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:15,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:15,734 INFO L378 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 [2023-11-19 05:03:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:15,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:15,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:15,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466569373] [2023-11-19 05:03:15,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466569373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:15,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:15,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715347366] [2023-11-19 05:03:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:15,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:15,847 INFO L87 Difference]: Start difference. First operand 1277 states and 1483 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-19 05:03:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:18,977 INFO L93 Difference]: Finished difference Result 1666 states and 1986 transitions. [2023-11-19 05:03:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-19 05:03:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:18,986 INFO L225 Difference]: With dead ends: 1666 [2023-11-19 05:03:18,986 INFO L226 Difference]: Without dead ends: 1666 [2023-11-19 05:03:18,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:18,987 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 826 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:18,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1486 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 05:03:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-19 05:03:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1273. [2023-11-19 05:03:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 800 states have (on average 1.83375) internal successors, (1467), 1267 states have internal predecessors, (1467), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1475 transitions. [2023-11-19 05:03:19,016 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1475 transitions. Word has length 34 [2023-11-19 05:03:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:19,017 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1475 transitions. [2023-11-19 05:03:19,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-19 05:03:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1475 transitions. [2023-11-19 05:03:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:03:19,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:19,019 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] [2023-11-19 05:03:19,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:19,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:19,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:19,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-19 05:03:19,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451639219] [2023-11-19 05:03:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:19,244 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 [2023-11-19 05:03:19,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:19,245 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:19,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:19,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:03:19,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:19,492 INFO L378 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 [2023-11-19 05:03:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:19,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:19,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451639219] [2023-11-19 05:03:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451639219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:19,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:19,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652459690] [2023-11-19 05:03:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:19,751 INFO L87 Difference]: Start difference. First operand 1273 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-19 05:03:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:24,202 INFO L93 Difference]: Finished difference Result 1777 states and 2076 transitions. [2023-11-19 05:03:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-19 05:03:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:24,208 INFO L225 Difference]: With dead ends: 1777 [2023-11-19 05:03:24,209 INFO L226 Difference]: Without dead ends: 1777 [2023-11-19 05:03:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:24,209 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 531 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 2534 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 05:03:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-11-19 05:03:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1269. [2023-11-19 05:03:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 800 states have (on average 1.82375) internal successors, (1459), 1263 states have internal predecessors, (1459), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1467 transitions. [2023-11-19 05:03:24,236 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1467 transitions. Word has length 34 [2023-11-19 05:03:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:24,236 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1467 transitions. [2023-11-19 05:03:24,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-19 05:03:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1467 transitions. [2023-11-19 05:03:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 05:03:24,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:24,241 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] [2023-11-19 05:03:24,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:24,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:24,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:24,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash -585509776, now seen corresponding path program 1 times [2023-11-19 05:03:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:24,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117614723] [2023-11-19 05:03:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:24,446 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 [2023-11-19 05:03:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:24,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:24,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:24,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:24,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:24,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:24,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117614723] [2023-11-19 05:03:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117614723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578036031] [2023-11-19 05:03:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:24,852 INFO L87 Difference]: Start difference. First operand 1269 states and 1467 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-19 05:03:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:24,929 INFO L93 Difference]: Finished difference Result 1257 states and 1447 transitions. [2023-11-19 05:03:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2023-11-19 05:03:24,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:24,939 INFO L225 Difference]: With dead ends: 1257 [2023-11-19 05:03:24,939 INFO L226 Difference]: Without dead ends: 1257 [2023-11-19 05:03:24,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:24,940 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 31 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:24,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2023-11-19 05:03:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2023-11-19 05:03:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 788 states have (on average 1.8261421319796953) internal successors, (1439), 1251 states have internal predecessors, (1439), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:03:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1447 transitions. [2023-11-19 05:03:24,964 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1447 transitions. Word has length 53 [2023-11-19 05:03:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:24,965 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1447 transitions. [2023-11-19 05:03:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-19 05:03:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1447 transitions. [2023-11-19 05:03:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:03:24,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:24,968 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] [2023-11-19 05:03:24,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:25,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:25,174 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-19 05:03:25,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1514336476, now seen corresponding path program 1 times [2023-11-19 05:03:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:25,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603968347] [2023-11-19 05:03:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:25,176 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 [2023-11-19 05:03:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:25,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:03:25,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c482638d-8a9e-4af3-af2d-995b2846f5c7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:03:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:25,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:03:25,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:25,647 INFO L378 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 [2023-11-19 05:03:25,656 INFO L378 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 [2023-11-19 05:03:26,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:26,387 INFO L378 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 [2023-11-19 05:03:26,404 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:03:26,405 INFO L378 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 [2023-11-19 05:03:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:26,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:26,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603968347] [2023-11-19 05:03:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603968347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:26,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940165744] [2023-11-19 05:03:26,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:26,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:26,422 INFO L87 Difference]: Start difference. First operand 1257 states and 1447 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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)